Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 2005, covering the Tom Paine Slough. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 7 0;"><SPAN>Singlebeam bathymetric survey of Clifton Court Forebay from 2005. NAD83 and NAVD88 are used.</SPAN><SPAN> Units are in meters.</SPAN></P></DIV></DIV></DIV>
Copyright Text: CA Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 2004 covering the lower portion of Tom Paine Slough and a short section of Sugar Cut. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P><DIV><P><SPAN /></P></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Singlebeam bathymetric survey of part of Jones Tract, located on the western perimeter of the area, perfomed in response to the 2004 Jones Tract emergency levee breach. NAD83 and NAVD88 are used.</SPAN></P></DIV></DIV></DIV>
Copyright Text: CA Department of Water Resources (DWR), Division of Engineering (DOE)
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 2004 of part of Tom Paine Slough and sections of Franks Tract, including: Taylor Slough, Old River, Holland Cut, False River, and Fishermans Cut. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 7 0;"><SPAN>Singlebeam bathymetric survey of Tule Canal, running north to south from just south of Verona (across from County Road 16) to Interstate 80 near West Sacramento.</SPAN><SPAN> Collected around 2003. NAD83 is used, units are in meters.</SPAN></P></DIV></DIV></DIV>
Copyright Text: CA Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>Singlebeam bathymetric survey from 2002, covering the southern perimeter of Sherman Island and Mayberry Slough. Located north of West Island and Antioch, CA. NAD 1983 UTM 10 is used, units are in meters.</SPAN></P></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 2001, covering Frank Horan Slough and a short part of Chadbourne Slough. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 2000 covering channels around Suisun Marsh and Grizzly Bay, Walnut Grove, and Sherman Island including: Goodyear Slough, Cordelia Slough, Suisun Creek, Chadborne Slough, Wells Slough, Sheldrake Slough, Boynton Slough, Peytonia Slough, Hill Slough, Cutoff Slough, First Mallard Branch, Tree Slough, Frost Slough, Nurse Slough, Sacramento River, Threemile Slough, Miner Slough, Steamboat Slough, Sutter Slough, Elk Slough, Mokelumne River, South Mokelumne River, Georgiana Slough, North Mokelumne River, Sycamore Slough, Hog Slough, Beaver Slough, Dead Horse Cut, Snodgrass Slough, and Delta Cross Channel. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>Singlebeam bathymetric survey of waterways and channels surrounding Union Island in the Sacramento-San Joaquin Dleta, inckuding: Old River, Middle River, and Grant Line Canal. NAD83 UTM Zone 10 is used, units are in meters.</SPAN></P></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of the Sacramento and San Joaquin River around the Chipps and Browns Island areas. Areas surveyed include the Sacramento River, San Joaquin River, Chipps Island, Spoonbill Creek, Montezuma Slough, Browns Island, Winter Island, Middle Slough, Broad Slough, Chain Island, and Kimball Island. The survey took place in 1998 using single beam echo sounder technology and was performed by DWR. The data were collected during original field survey in NAD83 and NAVD88 datums (horizontal and vertical units are in feet). </SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric data points collected around Chipps Island during 1998. They were extracted from the raw bathymetric database Data are referenced to feet in horizontal and vertical units. The data were collected in the original field survey in NAD83.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 1997 covering channels around Union Island, including: Middle River, Old River, Grant Line Canal, and Fabian and Bell Canal. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 1997 covering 3 Mile Slough. NAD 1983 UTM 10 is used, units are in meters.</SPAN></SPAN></P><DIV><P><SPAN /></P></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Singlebeam bathymetric survey from 1991 of a variety of sloughs and waterways found near or around Joice Island, including: Cutoff Slough, Cat Slough, Volanti Slough, Boynton Slough, Wells Slough, Chadborne Slough, Cordelia Slough, and Ibis Cut. NAVD83 UTM 10 is used, units are in meters.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 7 0;"><SPAN><SPAN>Singlebeam bathymetric survey from 1990 covering channels around Victoria Island, including: Old River, West Canal, Victoria Canal, North Canal, Middle River, North Victoria Canal, and Indian Slough. Vertical datum used was </SPAN></SPAN><SPAN>NGVD29.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 7 0;"><SPAN>Singlebeam bathymetric survey from 1978 and 1982 covering various channels and sloughs found around Suisun Marsh and Grizzly Island, including: Goodyear Slough, Suisun Slough, Cordelia Slough, Montezuma Slough, Ibis Cut, Wells Slough, Chadborne Slough, Hunter Cutoff, Boynton Slough, Frank Horan Slough, Hill Slough, Cutoff Slough, Tree Slough, Nurse Slough, and Luco Slough. NAD 1983 UTM 10 is used, units are in meters.</SPAN></P><P STYLE="margin:0 0 7 0;"><SPAN><SPAN /></SPAN></P><P STYLE="margin:0 0 7 0;"><SPAN>NOTE: Some spatial offset of data is present, especially in the west around Goodyear Slough and surrounding channels.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Singlebeam bathymetric survey of various channel cross sections found around the eastern Sacramento-San Joaquin Delta area, stretching from Walnut Creek south towards Empire Tract and west to east from Isleton to Sycamore Slough. Cross section surveys cover the following channels and/or islands: Tyler Island, Staten Island, Bouldin Island, Empire Tract, Delta Cross Channel, Snodgrass Slough, Georgiana Slough, Dead Horse Cut, South Mokelumne River, North Mokelumne River, Little Potato Slough, and White Slough. Vertical datum used was </SPAN><SPAN>NGVD29.</SPAN></P></DIV></DIV></DIV>
Copyright Text: CA Department of Water Resources (DWR)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN>For additional details refer to the report "Southern Sacramento-San Joaquin River Delta Condition Bathymetric Survey, October 2022" available upon request.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>For additional details refer to the report "Southern Sacramento-San Joaquin River Delta Condition Bathymetric Survey, October 2022" available upon request.</SPAN></SPAN></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Point Spacing: 3 feet nominal</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>For additional details refer to the report "Southern Sacramento-San Joaquin River Delta Condition Bathymetric Survey, October 2022" available upon request.</SPAN></P><P /></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>For additional details refer to the report "Southern Sacramento-San Joaquin River Delta Condition Bathymetric Survey, October 2022" available upon request.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>For additional details refer to the report "Southern Sacramento-San Joaquin River Delta Condition Bathymetric Survey, October 2022" available upon request.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Cinquini & Passarino Inc. conducted a bathymetric survey of portions of Old River, Grant Line Canal, Paradise Cut, Sugar Cut, Tom Paine Slough, Middle River and San Joaquin River for the Bay Delta Office and for Hydrologic Systems Incorporated for the South Delta Water Agency. The purpose of the dataset is to replace outdated and inaccurate data, help with the evaluation of sedimentation trends, improve numerical models, inform bathymetry changes near exports, and be a resource for informing management decisions such as dredging. This singlebeam dataset is meant as a supplement to the related multibeam and topographic point datasets from the same date range.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>Original field survey datum horizontal: NAD83 (2011) epoch 2017.5, California State Plane Zone III, US Survey Feet; and vertical: NAVD88, US Survey Feet have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Survey Dates: Between December 12, 2021 and August 30, 2022. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>• Instrumentation: Singlebeam echosounder with Real Time Kinematic (RTK) positioning corrections or direct RTK measurements (see report for locations).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>• Point Spacing: 3 feet nominal</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>For additional details refer to the report "Southern Sacramento-San Joaquin River Delta Condition Bathymetric Survey, October 2022" available upon request.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data Collection: Cinquini and Passarino, Inc.
Data Review and Archival Services: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This version of metadata is an interim metadata submittal. The data coverage for this submittal includes the wet section surveys for Knights Landing Ridge Cut and the Colusa Drain Connector and ends west of Grays Bend, roughly 4 miles to the south of Knights Landing. The bounding horizontal coordinates (in decimal degrees) for this submittal are as follows: West: -121.729018, East: -121.692621, North: 38.801925, South: 38.749172. Wet cross-section field surveys were performed using GPS and conventional total station surveys to collect channel geometry for stream areas that were under water during the Light Detection and Ranging (LiDAR) data capture. This work was done for the California Department of Water Resources, Division of Flood Management. The data were collected in NAD83 and NAVD88 datums (vertical and horizontal units in feet).</SPAN></P></DIV></DIV></DIV>
Copyright Text: CH2M Hill Inc. California DWR Division of Flood Management
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This data set represents bathymetry points for the Upper San Joaquin River Study Area (USJ) of the Central Valley Floodplain Evaluation and Delineation Program (CVFED) administed by the State of California Department of Water Resources (DWR). The data were collected in NAD83 and NAVD88 datums (Horizontal Units: Feet, Vertical Units: Feet).</SPAN></P><P><SPAN>The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.5, dated April 12, 2023. DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@ca.water.gov.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Engineering, Geodetic Branch, Field Surveys
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Fugro conducted single beam bathymetry surveys along portions of the Lower Sacramento River Basin, American River, and Feather River (including associated tributaries) on various dates in 2010. This consisted of over 190.5 miles of riverbed. More specifically, the survey areas included the underwater cross sections of the river bottom along portions of the Feather River, Honcut Creek, Knights Landing, Jack Slough, Yuba River, Yankee Slough, Bear River, Sacramento River, Elk Slough, Natomas Cross Canal, American River, Steamboat Slough, Miner Slough, Sutter Slough, Georgianna Slough, Three Mile Slough, Lindsey Slough, Cache Slough, Haas Slough, and Horseshoe Bend. This project was titled 'Central Valley Floodplain Evaluation and Delineation - Bathymetry Surveying in Support of Hydraulic Model Development' (contract number - 4600007989, task order no.18). The data were collected in NAD83 and NAVD88 datums (Horizontal Units: Feet, Vertical Units: Feet).</SPAN></P><P><SPAN>Additionally, Fugro West, Inc. performed two reconnaissances of the Lower Sacramento River within the limits of the proposed bathymetric survey described in Task Order 18, California Department of Water Resources, Contract 4600007989. The first reconnaissance was performed during the periods of October 8th thru 13th, 2009, and the second reconnaissance was performed January 7th and 8th, 2010. The second reconnaissance was necessary due to the extension of the original survey limits.The purpose of the reconnaissance efforts was to gather information regarding possible launch facilities, emergency pick-up and drop-off locations, and potential hazards within the limits of the bathymetric survey. The reconnaissance was performed by driving along the levees and performing visual inspections along the survey areas including visiting all boat launch facilities. The locations were collected using a hand held GPS and noted in a log book. Based on data gathered hydrographic surveying can be performed along most of the areas with no major difficulties. Boat launches were found at acceptable intervals along the rivers to allow safe deployment and recovery of the survey vessel. Accommodations were found throughout the survey area allowing minimal travel and comfortable conditions.</SPAN></P><P><SPAN>The following summarizes the condtions found with respect to the bathymetric surveys:</SPAN></P><P><SPAN>• Feather River – good depths with some sand bars and debris from the Sacramento River to Boyds Pump Ramp, from this location to the north extent of the survey area some shallow areas with 3’-5’.</SPAN></P><P><SPAN>• Honcut Creek – trees on both banks of river and areas of dense vegetation. No water then preventing any survey work.</SPAN></P><P><SPAN>• Jack Slough – large amounts of vegetation and debris in water preventing any survey work.</SPAN></P><P><SPAN>• Yuba River – good depths from Feather River to E Sreet bridge, from here east depths are 2’-3’.</SPAN></P><P><SPAN>• Yankee Slough – large amounts of vegetation preventing any survey work.</SPAN></P><P><SPAN>• Bear River – Could not get access into area from Sacramento River to Highway 70 Bridge, from this location heading East large amounts of vegetation preventing any survey.</SPAN></P><P><SPAN>• Natomas Cross Canal – Narrow in some areas with large amounts of vegetation, may be able to survey partial area near Sacramento River.</SPAN></P><P><SPAN>• American River – Shallow water 3’-6’ with rapids in some areas.</SPAN></P><P><SPAN>• Knights Landing Ridge Cut - dense vegetation growth in river, preventing any survey.</SPAN></P><P><SPAN>• Elk Slough - dense vegetation along the river banks, log debris in the river unable to survey.</SPAN></P><P><SPAN>• Sacramento River – good surveying conditions throughout.</SPAN></P><P><SPAN>• Steamboat Slough – good survey conditions throughout.</SPAN></P><P><SPAN>• Miner Slough – good survey conditions throughout.</SPAN></P><P><SPAN>• Sutter Slough - good survey conditions throughout.</SPAN></P><P><SPAN>• Georgianna Slough - good survey conditions throughout.</SPAN></P><P><SPAN>• Three Mile Slough - good survey conditions throughout.</SPAN></P><P><SPAN>• Lindsey Slough - good survey conditions throughout.</SPAN></P><P><SPAN>• Cache Slough - good survey conditions throughout. </SPAN></P><P><SPAN>The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.5, dated April 12, 2023. DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Fugro West Inc. California DWR Floodplain Management Branch, Floodplain Mapping Section
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Fugro conducted single beam bathymetry surveys along portions of the Upper Sacramento River. This consists of approximately 117 miles of riverbed. Surveyed area runs from Verona, CA in the south (junction of the Feather River) and continues north to Hamilton City, passing through Knights Landing, Boyers Landing, Grimes, Meridian, Colusa, Princeton, and Butte City. This project was titled 'Central Valley Floodplain Evaluation and Delineation - Bathymetry Surveying in Support of Hydraulic Model Development' (contract number - 4600007989, task order no.18). The data were collected in NAD83 and NAVD88 datums (Horizontal Units: Feet, Vertical Units: Feet).</SPAN></P><P><SPAN>The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.5, dated April 12, 2023. DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>HDR conducted single beam bathymetry surveys along portions of the Lower San Joaquin River and some of its tributaries on various date in 2009. This consists of approximately 152 miles of riverbed. Title of the project - 'Bathymetry Surveying in Support of Hydarulic Model Development' (Contract number - 4600007990, task order - 18). </SPAN></P><P><SPAN>The following was obtained from the official project report:</SPAN></P><P><SPAN>HDR Engineering Inc, the Architect/Engineer Contractor (AEC), has been assigned the responsibility of performing the services related to the Lower San Joaquin River System by the California Department of Water Resources (DWR). Task order 18 is in compliance with HDR Contract 4600007990. On October 13, 2009, task order 18 Amendment 1 was issued to address the inclusion of Subtask 6 for stream cross section field surveys. Task order 18 Amendment 1 was necessitated by the fact that conditions in some of the bathymetry reaches were different than originally anticipated when Task order 18 was scoped. There are 8 reaches identified for stream cross section field surveys and they are prioritized as follows: 1, 2, 3, 4, 8, 5, 7, and 6. HDR is the primary point of contact with subconsultants Andregg Geomatics and Fugro West providing analysis and stream cross section survey support. </SPAN></P><P><SPAN>The original survey data were collected in NAD83 and NAVD88 datums (Horizontal Units: Feet, Vertical Units: Feet).</SPAN></P><P><SPAN>The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.3, dated April 13, 2022. DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey around Holland Tract (Holland Cut, Roosevelt Cut, and Sand Mound Slough), King Island (White Slough), parts of Disappointment and Little Potato Slough, a section of the San Joaquin River south of Twitchell Island, and Miner Slough. The survey took place in 1989 using single beam echo sounder technology and was performed by Delta RD Engineers. The bathymetry points were compiled from surveys taken by Murray, Burns and Kienlen (MBK) and scanned into PDF format. These surveys are represented as cross-sections and soundings at certain stations and have approximate elevations along the levee every 5 feet (1.524 meters). These elevations were estimated using the scanned PDFs of the cross-sections and sounding graphs. The points and elevations were entered into an excel spreadsheet and compared with the original scanned PDF graphs. These elevations were then entered into GIS. This was done by creating centerlines 90 degrees off the given stations on the levees and then dividing the lines with points 1.524 meters apart. The estimated elevations from the excel spreadsheet were inputted into the bathymetry points attributes table. This process was repeated for every scanned PDF station from the MBK reports. The original field survey data were collected in NAD83 and NGVD29 datums. </SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric data points collected around Chipps Island during 1998. They were extracted from the raw bathymetric database Data are referenced to feet in horizontal and vertical units. The data were collected in the original field survey in NAD83.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of the Sacramento and San Joaquin River around the Chipps and Browns Island areas. Areas surveyed include the Sacramento River, San Joaquin River, Chipps Island, Spoonbill Creek, Montezuma Slough, Browns Island, Winter Island, Middle Slough, Broad Slough, Chain Island, and Kimball Island. The survey took place in 1998 using single beam echo sounder technology and was performed by DWR. The data were collected during original field survey in NAD83 and NAVD88 datums (horizontal and vertical units are in feet). </SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of the Sacramento River, San Joaquin River, South Delta, and associated tributaries. </SPAN></P><P><SPAN>Specific areas surveyed include, but are not limited to: the western part of Browns and Winter Islands, Antioch Reach, parts of the Sacramento River, parts of the San Joaquin River, Kimball Island, the periphery of Sherman Lake, Mayberry Cut, Donlon Island, Georgiana Slough, a section of the Delta Cross Channel, Steamboat Slough, Sutter Slough, Elk Slough, Prospect Slough, Liberty Cut, Lindsey Slough, French Island, Little Hastings Cut, Hass Slough, parts of Ulatis Creek, Sugar Cut, Old RIver, Paradise Cut, Little Potato Slough, Devils Isle, Little Connection Slough, White Slough, Hog Island, Whiskey Slough, Columbia Cut, Headreach Island, Ward Island, Tinsley Island, Medford Island, Three River Reach, Middle River, Mildred Island, Connection Slough, Little Mandeville Island, Bacon Island, Holland Cut, Rhode Island, Fay Island, Kaketan Island, Purakkun Island, Aero Island, Beetle Island, McFly Island, Empire Cut, Spud Island, Haypress Reach, Acker Island, and Turner Cut. </SPAN></P><P><SPAN>The survey took place in 1999 using single beam echo sounder technology and was performed by DWR. The original survey data were collected in NAD83 and NAVD88 datums (horizontal and vertical units are in feet).</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resource
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of part of the Sutter Bypass, collected on April 12 and 13, 2019 using single beam echo sounder technology and was performed by ESA. </SPAN></P><P><SPAN>Project Name: Tisdale E1 </SPAN></P><P><SPAN>ESA Project Number: D130028.40</SPAN></P><P><SPAN>Crew: M. Norcott and C. Turner.</SPAN></P><P><SPAN>The original field survey data were collected in NAD83 and NAVD88 datums. Horizontal and vertical units are both in feet. </SPAN><SPAN>The original field survey data have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P></DIV></DIV></DIV>
Copyright Text: ESA (Environmental Science Associates)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN>Bathymetric survey of Old River, Middle River and Woodward Canal, surrounding Woodward Island and the north eastern section of Victoria Island. The survey took place in November of 2008 using single beam echo sounder technology and was performed by GMW (Green Mountain Engineers). The original field survey data were collected in NAD83 (horizontal) and NGVD29 (vertical) datums in Feet for Horizontal and Vertical Units.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Green Mountain Engineers
California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey between Snodgrass Slough and Georgiana Slough, along the South Fork of the Mokelumne River. The survey took place in 2005 using single beam echo sounder technology and was performed by KSN. The original field survey data were collected in NAD83 (horizontal) and NGVD29 (vertical) datums in Feet for horizontal and vertical units.</SPAN></P></DIV></DIV></DIV>
Copyright Text: KSN (Kjeldsen, Sinnock & Neudeck, Inc)
California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey between Clarksburg and Sutter. The survey took place on July 8</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN>, 2008 using single beam echo sounder technology. The original field survey data were collected in NAD83 and NAVD88 datums.</SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey between Freeport and Clarksburg. The survey took place on July 8</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN>, 2008 using single beam echo sounder technology. The original field survey data were collected in NAD83 and NAVD88 datums.</SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey of Georgiana Slough. The survey took place between July 7</SPAN></SPAN><SPAN><SPAN>th </SPAN></SPAN><SPAN><SPAN>and 8</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN><SPAN>, 2008 using single beam echo sounder technology. The data were collected in NAD83 and NAVD88 datums. </SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey between Sutter and Walnut Grove. The survey took place on July 8</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN>, 2008 using single beam echo sounder technology. The original field survey data were collected in NAD83 and NAVD88 datums. </SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey between Walnut Grove and Ryde. The survey took place on July 8</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN><SPAN>, 2008 using single beam echo sounder technology. The original field survey data were collected in NAD83 and NAVD88 datums. </SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey of Steamboat Slough. The survey took place on July 9</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN><SPAN>, 2008 using single beam echo sounder technology. The original field survey data were collected in NAD83 and NAVD88 datums. </SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey of Sutter Slough. The survey took place on July 10</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN>, 2008 using single beam echo sounder technology. The original field survey data were collected in NAD83 and NAVD88 datums. </SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry & Technical Support Section, conducted a bathymetric survey of Roaring River Slough for the DWR Division of Environmental Services (DES) Ecosystem Planning and Information Branch. The purpose of this survey is to determine river bottom elevation in order to better understand flow dynamics and sedimentation patterns of Roaring River Slough. The survey took place between April 6th and April 9th, 2009 using single beam echo sounder technology. The data were positionally corrected using Real Time Kinematic (RTK) GPS. The original field survey data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums. </SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 14 0;"><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry and Technical Support Section, conducted a bathymetric survey at the request of the CA-DWR Division of Environmental Services. The project area is: Miner Slough downstream of HWY-84 and in the Sacramento Deep Water Ship Channel south of Arrowhead Harbor. The purpose of the project is to provide high resolution, accurate bathymetry data for hydraulic models of the Prospect Island area. These models will aid in the selection of alternatives to create beneficial wetlands on the island. The data will also be used to support seepage analyses on neighboring islands. Field work was conducted in January and February of 2012 using RTK GPS and sonar technology. Single beam sonar with RTK GPS was used to supplement a multibeam sonar survey where the channel was inaccessible by our multibeam collection platform. This dataset contains single beam bathymetry only. The multibeam data exists as its own file associated with this dataset. </SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resource, North Central Region Office (NCRO), Bathymetry and Technical Support Section, conducted a bathymetric survey near the east end of Grant Line Canal and Old River.The survey took place between April 11th 2013 and September 5th 2013 using multibeam and single beam echo sounder technology. </SPAN><SPAN>The data were positionally corrected using Real Time Kinematic (RTK) GPS. The original field survey data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums. This document includes metadata for the single beam bathymetric survey and derived products, which may include text files with XYZ data and a point feature class in a file geodatabase.</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>Bathymetric survey of Clifton Court Forebay. The survey took place between January 25</SPAN></SPAN><SPAN><SPAN>th</SPAN></SPAN><SPAN><SPAN>, 2016 and March 1</SPAN></SPAN><SPAN><SPAN>st</SPAN></SPAN><SPAN><SPAN>, 2016 using single beam echo sounder technology and was collected by Brody Sunderland, Robert Short, Scott Flory, and Lisa Sawyer. The original survey data were collected in NAD83 and NAVD88 datums. </SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Horizontal Units: Feet</SPAN></SPAN></P><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>• Vertical Units: Feet</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry and Technical Support Section, conducted a bathymetric survey of the Feather River at the request of the DWR Flood Operations Center (FOC) and the DWR Division of Engineering (DOE). The main purpose of the data collection effort was to provide supporting data for hydrologic modeling of the river. The survey took place between June 9th and August 7th, 2017 using single beam echo sounder technology. The original survey data were positionally corrected using Post Processed Kinematic (PPK) GPS. </SPAN><SPAN>The original field survey data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums. This dataset contains the June 2017 portion of the study. </SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Big Break and surrounding creeks and sloughs. The data are needed to help determine local hydraulics, future uses of Big Break, and to serve as a baseline for determining impacts of nearby wetland restoration projects. The survey took place between January and July 2017 using single beam echo sounder technology. The original field survey data were positionally corrected using Real-Time Kinematic (RTK) GPS. </SPAN><SPAN>The original field survey data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums. </SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry and Technical Support Section, conducted a bathymetric survey of the Feather River at the request of the DWR Flood Operations Center (FOC) and the DWR Division of Engineering (DOE). The main purpose of the data collection effort was to provide supporting data for hydrologic modeling of the river. The survey took place between June 9th and August 7th, 2017 using single beam echo sounder technology. The original field data were positionally corrected using Post Processed Kinematic (PPK) GPS</SPAN><SPAN>. The original field survey data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums. This dataset contains the August 2017 portion of the study. </SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Bathymetry and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Tom Paine Slough at the request of the DWR Bay Delta Office (BDO). The main purpose of the data collection effort was to provide supporting data for hydrologic models and to determine water diversion challenges. The survey took place on January 9th, 2018 using single beam echo sounder technology. </SPAN><SPAN>The original field survey data were positionally corrected using Inertially Aided Post-Processed Kinematic (IAPPK) procedures</SPAN><SPAN>. The original field survey data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums. </SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Tom Paine Slough at the request of the DWR Bay Delta Office (BDO). The main purpose of the data collection effort was to provide supporting data for hydrologic models and to determine water diversion challenges. The survey took place between January 17th and January 24th, 2018 using single beam echo sounder technology. The data were positionally corrected using Real Time Kinematic (RTK) GPS. </SPAN><SPAN>The original survey data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetry survey of Clifton Court Forebay (CCF) at the request of the Bay Delta Office and Delta Field Division. DWR conducted a single-beam sonar survey in CCF in March 2018. This survey was intended as a more limited assessment of change by replicating selected transects from a more comprehensive 2016 survey. The shallow regions of Clifton Court Forebay were sampled to determine general bed elevation trends since 2016, and to determine whether further measurements are necessary. The singlebeam field survey was completed on March 14, 2018. A separate, February 2018, multibeam dataset of the apron and scour hole is available. </SPAN><SPAN>The original field survey data were positonally corrected using Real-Time Kinematic (RTK)GPS. </SPAN><SPAN>The original field survey data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Franks Tract. This data is needed to better describe the Tract and to allow improved understanding of water quality and hydrodynamics of the area. The survey took place between April 2 and April 18, 2018 using single beam echo sounder technology. The data were positionally corrected using Inertially Aided Post-Processed Kinematic (IAPPK) procedures. </SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums. Nearby datasets: multibeam sonar data was collected in the deeper portions of Franks Tract in 2017. Portions of the adjacent channels: Sand Mound Slough/ Roosevelt Cut, and False River were surveyed in May 2018.</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Mildred Island. The data is needed for improving the understanding of water circulation, turbidity and salinity trapping for drought management and endangered species mitigation purposes. The survey took place between May 8 and June 6, 2018 using single beam echo sounder technology. The data were positionally corrected using Inertially Aided Post-Processed Kinematic (IAPPK) procedures. </SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>Nearby datasets: The adjacent portions of Middle River and Empite Cut up to the south breach of Mildred Island were surveyed in June, 2011.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>May 2013 - performed by Kjeldsen, Sinnock & Neudeck Inc. (KSN) at the request of Reclamation District 2058 to assess bed elevation change versus 2004 and 2005 DWR surveys. The KSN survey consisted one single-beam sonar along-axis profile that included direct GPS observation points through the non-navigable, weed-filled eastern reach of the slough (starting at about cross section 8). The nine cross sections were surveyed with direct GPS observations of limited data density due to the method used.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>January 2018 – performed by DWR, North Central Region Office at the request of Bay Delta Office to assess channel elevations. This survey was intended to fully cover the target area with three along-axis profiles and the nine cross sections. All data was collected with sonar.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>The 2013 KSN dataset was very sparse in areas, with as much as 125 feet separating points along the profile, on average, and as few as five observations within the channel banks for cross sections. The 2018 DWR survey had much improved data density, but the comparison is necessarily limited by the availability of data from 2013. An estimate of bed elevation change in Tom Paine Slough along the centerline was made by subtracting 2013 elevation from calculated 2018 elevation for points that were within a 5-foot radius of one another according to an algorithm calculating the weighted average of nearest neighbor points (WANN). Change for the cross sections was analyzed separately. No attempt was made to produce an estimate of change for the whole of Tom Paine Slough because the data from 2013 only contained one centerline and the cross sections were too far apart to reasonably interpolate a surface. Change along the 2013 centerline was further broken down by 3,000 foot segments along the profile to examine change more locally. To prevent under-weighting areas with fewer qualifying data points, all statistics were calculated on an evenly-spaced dataset, with change in elevation interpolated to one foot intervals. Analysis of change along the centerline indicates a small, but significant, net deposition of sediment in Tom Paine Slough between 2013 and 2018. Sediment trends vary locally and are sensitive to differences in boat path 1, but suggest increasing deposition from west to east, with a short reach of scour near cross section 7. Since accuracy for two surveys was 0.24 ft and 0.16 ft for KSN and DWR, respectively, as much as 0.4 ft of difference could be explained by systematic survey error. However, this does not explain the increasing trend of deposition along Tom Paine Slough. The difference in data collection methods used by KSN — sonar for most of the slough, with direct GPS observation in weedy areas — could also be responsible for some of the increase seen towards the eastern end of the survey. There was a much higher mean elevation change for KSN points collected by direct observation (1.1 ft) compared to points collected by sonar (0.6 ft). Despite this, it is entirely possible that this observed difference between collection techniques was caused by an actual trend in deposition. It appears most likely that both are true: some of the increase in elevation towards the east is due to differing collection techniques, but most of it probably reflects an actual increase in elevation. Mean change in elevation and change in cross-sectional area was calculated for each individual cross section. Because the 2013 KSN cross sections were all conducted by labor intensive manual GPS observations, data points within the channel were sparse, but land elevations beyond the channel banks were included. The 2018 DWR survey was conducted by sonar within the navigable channel limits, and thus had much greater data density within the channel, but without land elevations beyond the banks.</SPAN></SPAN></P></DIV>
Copyright Text: California Department of Water Resources (DWR), North Central Region Office (NCRO).
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Suisun Slough for the Bay Delta Office (BDO). The main purpose of the survey was to replace outdated and inaccurate data, help with the evaluation of a large number of restoration proposals nearby, and inform the re-operation of the Montezuma Slough Salinity Control Structure for the Delta Smelt Resiliency Strategy being implemented in 2018. </SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>Survey Dates: December 18, 2018</SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures.</SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>Related datasets: Multibeam: Montezuma Slough, July 2018; Suisun Slough, October 2018. Singlebeam: Suisun Slough, December 2018.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Suisun Slough for the Bay Delta Office (BDO). The main purpose of the survey was to replace outdated and inaccurate data, help with the evaluation of a large number of restoration proposals nearby, and inform the re-operation of the Montezuma Slough Salinity Control Structure for the Delta Smelt Resiliency Strategy being implemented in 2018. </SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>Survey Dates: December 18, 2018 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures.</SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>Related datasets: Multibeam: Montezuma Slough, July 2018; Suisun Slough, October 2018. Singlebeam: Suisun Slough, December 2018.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Suisun Slough for the Bay Delta Office (BDO). The main purpose of the survey was to replace outdated and inaccurate data, help with the evaluation of a large number of restoration proposals nearby, and inform the re-operation of the Montezuma Slough Salinity Control Structure for the Delta Smelt Resiliency Strategy being implemented in 2018.</SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>Survey Dates: December 3-6 and December 18, 2018</SPAN></P><P><SPAN>• Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures.</SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>Related datasets: Multibeam: Montezuma Slough, July 2018; Suisun Slough, October 2018; Nurse Slough, October 2018. Singlebeam: Grizzly Bay, December 2018.</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Integrated Regional Water Management, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Little Mandeville Island for the Bay Delta Office (BDO). The main purpose of the data is to replace outdated and inaccurate data, improve innudation mapping throughout the Delta and help with the evaluation of restoration proposals nearby. This dataset is from kayak-mounted singlebeam sonar for the northwest corner of the Island and is meant to supplement a grid of multibeam strips for the remainder of the Island. </SPAN><SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums.</SPAN></SPAN></P><P><SPAN>• Survey Dates: March 11, 2019 </SPAN></P><P><SPAN STYLE="font-size:12pt">• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures</SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN STYLE="font-size:10pt">• Related datasets: Little Mandeville Island, April 2019 -- multibeam grid; Little Mandeville Island, June 2020 -- multibeam data for levee breaches</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of the San Joaquin River from Mossdale to Vernalis for the Bay Delta Office (BDO). The main purpose of the data is to replace outdated and inaccurate data and help with the creation of accurate models to investigate issues such as salinity intrusion in the South Delta, and inform operation of State Water Project facilities. </SPAN><SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums</SPAN></SPAN></P><P><SPAN>• Survey Dates: March 19-21, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. </SPAN></P><P><SPAN>• Point Spacing: about 1 foot </SPAN></P><P><SPAN>• Related datasets: San Joaquin River multibeam, March 2019</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a targeted singlebeam bathymetric survey on the Sacramento River near Clarksburg for the Delta Conveyance Office. This singlebeam data is not intended to provide enough points to interpolate a surface, the main purpose of the data is to serve as an independent check on multibeam data collected on the same date. The survey was conducted in tandem with the multibeam survey with the singlebeam vessel trailing just beyond the turbulent influence of the lead vessel, about 100 yards. The echosounder was operated 200 kHz, and may penetrate slightly further into the bed substrate than the 455 kHz multibeam sonar. </SPAN><SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums.</SPAN></SPAN></P><P><SPAN>• Survey Date: April 17, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. </SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Sacramento River at Clarksburg (multibeam), April 2019</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a singlebeam bathymetric survey of several shallow areas and submerged islands in the San Joaquin River to supplement to ongoing multibeam surveys of the River and increase bathymetric coverage. </SPAN><SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone III coordinate system) and NAVD88 datums.</SPAN></SPAN></P><P><SPAN>• Survey Dates: April 11-25, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. </SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Columbia Cut 2012, additional multibeam work pending release</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Little Hastings Tract and "Fong's Island" for the Bay Delta Office (BDO). The main purpose of the data is to replace outdated and inaccurate data, help with the evaluation of a large number of restoration proposals nearby, and supplement a December 2018 interferometric survey by USGS in adjacent waterways. This survey was cut short due to technical difficulties (later completed in July and August 2019). Numerous patches of heavy vegetation made it impossible to follow a neatly planned survey grid. </SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN>• Survey Dates: June 19, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures</SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Little Hastings Tract Singlebeam, August 2019; Fong's Island (Kayak) Singlebeam, July 2019; USGS Cache Slough Complex Interferometric, December 2018 (EXTERNAL)</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Little Hastings Tract and "Fong's Island" for the Bay Delta Office (BDO). The main purpose of the data is to replace outdated and inaccurate data, help with the evaluation of a large number of restoration proposals nearby, and supplement a December 2018 interferometric survey by USGS in adjacent waterways. This survey was conducted by kayak due to hazardous shallow water and thick aquatic vegetation. At the time of the survey the south end of the Fong's Island was entirely inaccessible due to vegetation (it was later surveyed in August 2019). </SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></P><P><SPAN /></P><P><SPAN>• Survey Dates: July 8, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Real Time Kinematic (RTK) GPS procedures. </SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Little Hastings Tract Singlebeam, June 2019; Little Hastings Tract Singlebeam, August 2019; USGS Cache Slough Complex Interferometric, December 2018 (EXTERNAL)</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of selected parts of the Sacramento Deep Water Ship Channel and Lake Washington for the Bay Delta Office (BDO). The main purpose of the data is to obtain elevation data in the shoals to supplement a December 2018 interferometric survey by USGS, to validate other datasets, and to replace outdated and inaccurate data in some areas. A separate multibeam survey was conducted for the Ship Channel headwaters, from the Industrial Blvd. overpass east to the Sacramento River locks. These data will inform modeling efforts to aid in the evaluation of a large number of restoration proposals nearby. </SPAN><SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></SPAN></P><P><SPAN>• Survey Dates: August 5-8, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. </SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Sacramento Deep Water Ship Channel Multibeam, August 2019; USGS Sacramento Deep Water Ship Channel Multibeam, December 2018 (EXTERNAL);</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Little Hastings Tract and "Fong's Island" for the Bay Delta Office (BDO). The main purpose of the data is to replace outdated and inaccurate data, help with the evaluation of a large number of restoration proposals nearby, and supplement a December 2018 interferometric survey by USGS in adjacent waterways. This survey completed earlier surveys in June and July 2019 that were interrupted. Numerous patches of heavy vegetation made it impossible to follow a neatly planned survey grid. </SPAN><SPAN><SPAN>The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></SPAN></P><P><SPAN>• Survey Dates: August 23, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures</SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Little Hastings Tract Singlebeam, June 2019; Fong's Island (Kayak) Singlebeam, July 2019; USGS Cache Slough Complex Interferometric, December 2018 (EXTERNAL)</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Bethany Reservoir for the Delta Field Division (DFD). The main purpose of the data is to provide an updated reservoir elevation surface, assess sedimentation at key infrastructure components and to develop a revised storage capacity curve. This singlebeam data was collected in shallow, vegetated areas to supplement coincident multibeam bathymetry. </SPAN></P><P><SPAN><SPAN>Original field survey datum </SPAN></SPAN><SPAN>& Coordinate System</SPAN><SPAN><SPAN>horizontal: </SPAN></SPAN><SPAN>North American Datum of 1983, NAD83(2011) NGS CORS Epoch 2010.0000, California State Plane Coordinate System, Zone 3. Units are U.S. Survey Feet and vertical: Elevations established in this survey are on the North American Vertical Datum of 1988, NAVD88, as derived from applying GEOID12A to NAD83(2011) NGS CORS Epoch 2010.0000 ellipsoid heights are U.S. Survey Feet and </SPAN><SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P><SPAN>• Survey Date: June 22, 2021 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. </SPAN></P><P><SPAN>• Along Track Point Spacing: about 1 foot </SPAN></P><P><SPAN>• Related datasets: Bethany Reservoir Multibeam June 2021, Bethany Reservoir Interpolated Bathymetry June 2021</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of a large area spanning west - east from Vallejo to Stockton and north - south from Walnut Grove to Lathrop. Areas surveyed include, but are not limited to: Carquinez Strait, Suisun and Honkey Bay, Sacramento and San Joaquin Rivers, Middle River, Old River, Mokelumne River, Georgiana Slough and White Slough. The survey took place between 1933 and 1954 by NOAA. The original field survey data is in NAD83 and NGVD29 datums, and has been converted to California Teale Albers, NAD83 at time of data import. </SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric data points collected around Chipps Island during 1942. They were extracted from the raw bathymetric database. Data are referenced to NGVD29, units feet.The data is in NAD83.</SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric data points collected around Chipps Island during 1950. They were extracted from the raw bathymetric database. Original field survey data are referenced to NGVD29, units </SPAN><SPAN>Feet and have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric data points collected around Chipps Island during 1990. They were extracted from the raw bathymetric database. Data are referenced to NGVD29, units feet. A modification was made to these point locations. The entire DWR 1990 set appears to have an offset which is not a datum-related problem. Although there are many reasons why this offset could exist, Specific cause not found, therefore, the entire set of points extracted for Chipps Island was dragged and moved "into position" based on the best fit of the points with the narrow channel and with the shoreline around Chipps.</SPAN></P><P><SPAN>Bathymetric data points collected around Chipps Island during 1990. They were extracted from the raw bathymetric database. The original field survey data are referenced to NGVD29, units feet. The original field survey data were collected in NAD83, </SPAN><SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration) / NOS (National Ocean Service)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of Carquinez Strait, Suisun Bay, Grizzly Bay, Honker Bay, Suisun Cutoff, Suisun Slough, Montezuma Slough, Cutoff Slough, Cross Slough, Nurse Slough, Little Honker Bay, Luco Slough, Denverton Slough, Seal Island Channel, Andy Mason Slough, Champion Slough, Mallard Slough, New York Slough, Middle Slough, Broad Slough, parts of the Sacramento and San Joaquin Rivers, Sherman Lake, Threemile Slough, Fishermans Cut, and Sevenmile Slough. The survey took place in 1990 using single beam echo sounder technology and was performed by NOAA. The original field survey data were collected in NAD83 and NGVD29 datums, and </SPAN><SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey around Sherman Island, including parts of the Sacramento River, San Joaquin River, Sherman Lake, Broad Slough, Big Break, Dutch Slough, False River, and Taylor Slough. The survey took place in 1991 using single beam echo sounder technology and was performed by NOAA. The original field survey data were collected in NAD83 and NGVD29 datums, and </SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of Franks Tract, Sacramento River south of Rio Vista, parts of the San Joaquin River, Old River, Dutch Slough, and Potato Slough, collected by NOAA in 1992. Original field survey datums NAD83 (horizontal) and NGVD29 (vertical) datums</SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P></DIV></DIV></DIV>
Copyright Text: NOAA (National Oceanic and Atmospheric Administration)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The California Department of Water Resources (CA-DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of selected parts of the Sacramento Deep Water Ship Channel and Lake Washington for the Bay Delta Office (BDO). The main purpose of the data is to obtain elevation data in the shoals to supplement a December 2018 interferometric survey by USGS, to validate other datasets, and to replace outdated and inaccurate data in some areas. A separate multibeam survey was conducted for the Ship Channel headwaters, from the Industrial Blvd. overpass east to the Sacramento River locks. These data will inform modeling efforts to aid in the evaluation of a large number of restoration proposals nearby. </SPAN><SPAN><SPAN>The original field survey data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.</SPAN></SPAN></P><P><SPAN>• Survey Dates: August 5-8, 2019 </SPAN></P><P><SPAN>• Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. </SPAN></P><P><SPAN>• Point Spacing: about 1 Foot</SPAN></P><P><SPAN>• Horizontal Units: US Foot</SPAN></P><P><SPAN>• Vertical Units: US Foot</SPAN></P><P><SPAN>• Related datasets: Sacramento Deep Water Ship Channel Multibeam, August 2019; USGS Sacramento Deep Water Ship Channel Multibeam, December 2018 (EXTERNAL);</SPAN></P></DIV></DIV></DIV>
Copyright Text: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Third Order, Class II Hydrographic Survey was conducted per USACE, EM 110-2-1003, January 2002. NOTE: The hydrographic survey utilized First Order, Class I standards and survey equipment, but the survey is classified as Third Order, Class II because tide gauges and survey line spacing are further apart than allowable for Class 1 surveys.</SPAN></P><P><SPAN>A single-beam INNERSPACE Model 455 survey-grade depthsounder was used to collect water depth data along predetermined transects of the navigation channels. Echo sounder had a frequency of 200kHz, with a 3.5 degree cone measured at 6-db point. Echosounding calibration check was conducted a minimum of 2 times per day, including immediately before and after survey operations. Top of return trace used as point of interpretation of sounding. Bar checks taken at a minimum of five foot intervals from the surface to 35' depths. Before and after bar checks taken at identical locations within a work area. The mean of the before and after bar checks used to correct all observed data recorded within a given work area. Data rejected if agreement between before and after bar checks greater than 0.3 feet. The survey vessel collected 20 soundings per second while moving at 5-knots (8.5 feet per second), for an average density of more than 2 soundings per foot of trackline. Soundings were thinned and input into AutoCAD .dwg file for plotting.</SPAN></P><P><SPAN>Transects in the large, primary channels, such as the Sacramento River, False River, and San Joaquin River, were spaced every 400 feet. Transects were acquired every 1000 feet in Sherman Lake and Frank's Tract. Tributary channels wider than 300 feet, were surveyed every 400 feet a minimum distance of 1600 feet upstream from confluence with primary channels. In the bay regions, such as San Pablo Bay and Suisun Bay, survey lines were spaced every 400 feet except in the Carquinez Straits and San Pablo Straits where transects were every 1000 feet.</SPAN></P><P><SPAN>Soundings were corrected for tides measured using barometric-compensated, pressure-sensing tide gauges. Up to 8 tide gauges were installed simultaneously at nominal 2-mile intervals along the ship channels, and soundings were always collected between upstream and downstream tide gauges. The tide gauges are called MACROTIDE and are manufactured by Coastal Leasing of Cambridge, Massachussetts. The tide gauges were programmed to sample at 0.5-second intervals for 2-minutes at 6-minute intervals. The tide gauges include 2 pressure sensors, including one for measuring atmospheric pressure and the other for measuring underwater pressure. The pressure sensors in the tide gauge are ICS strain gauges that measure psia to 30m with 0.1% (0.1-foot) accuracy.</SPAN></P><P><SPAN>Software was used to process the pressure data and compute water level data at 1-minute intervals. Gauges were calibrated at factory prior to deployment. Water level data was calibrated by periodically using a weighted tape to manually measure the elevation of the water surface using a nearby NAVD-88 benchmark as vertical reference. Manual calibrations matched the recorded tide data within +/-0.1 feet. Multiple tide gauges were established at nominal 2-mile intervals so that tide data would be available no more than 5000 feet from the area being surveyed. Tide gauge readings were made and documented at the start of each survey line.</SPAN></P><P><SPAN>New geodetic control was established landside, so that tide gauge elevations could be determined relative to NAVD88 benchmarks along the entire length of the survey.</SPAN></P><P><SPAN>Water Levels were used in conjunction with water depth data, vessel test course calibration and squat/settlement curves, to determine topographic elevations of the river bottom and seabed. All hydrographic procedures conformed with "Hydrographic Manual", USACE manual update, January 2002 (EM1110-2-1003).</SPAN></P><P><SPAN>All hydrographic data "field finished" allowing collection, processing and plotting of cross-sections in the field for real-time data review.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Hydrographic survey was conducted by Sea Surveyor, Inc. (Geophysical Survey Permit PRC-8429 issued by California State Lands Commission, expiration October 2008); Survey control provided by Bestor Engineers, Inc. All work contracted by the US Army Corps of Engineers, San Francisco District. Funding was provided by Federal Appropriations and non-Federal matching funds provided by the Port of Stockton and Port of Sacramento.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of the Sacramento - San Joaquin Delta, stretching north-south from Lambert to Perrys Island and west-east from Perrys Island to Thornton. The survey took place in 1934 by the US Coast and Geodetic Survey (USCGS). Original field survey datums NAD 1927 (horizontal) and NGVD 29 (vertical) </SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: US Coast and Geodetic Survey (USCGS)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey of the Sacramento River between Sacramento and Rio Vista, parts of Elk Slough, Sutter Slough, Miner Slough, Steamboat Slough, and sections of the Old and Middle Rivers around the Woodward Island area. The survey took place in 1977 using single beam echo sounder technology and was performed by the USGS. The original field survey data were collected in NAD83 and NGVD29 datums and </SPAN><SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: USGS (United States Geological Survey)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey in the Sacramento - San Joaquin Delta of specific parts of the South Fork Mokelumne River, White Slough, Bishop Cut, and Honker Cut. The survey took place in 1999 by the USGS using single beam echo sounder technology. The original field survey datums NAD83 (horizontal) and NGVD29 (vertical) </SPAN><SPAN>have been converted to California Teale Albers, NAD83 at time of field survey data import.</SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P></DIV></DIV></DIV>
Copyright Text: USGS (United States Geological Survey)