i06_Bathy_NCRO_20190819_DeepWaterShipChannel

ISO-19139 Metadata

Resource Identification Information:

Citation:
Title:  i06_Bathy_NCRO_20190819_DeepWaterShipChannel

Reference date - publication:  2019-11-07

Edition: Original
Presentation format:  mapDigital

Series:
Name: CA-DWR NCRO Delta Bathymetry
Issue: Sacramento Deep Water Ship Channel, August 2019

Party responsible for the resource - originator: 
Organization's name: California DWR, DOE, Geomatics

Contact information:
Phone:
Voice: N/A
Address:
City: Sacramento
Administrative area: CA
Postal code: 95814
e-mail address: GIS@water.ca.gov
Themes or categories of the resource:  elevation, inlandWaters

Place keywords:
Keywords:  Sacramento Deep Water Ship Channel, Lake Washington, Prospect Island

Temporal keywords:
Keywords:  August, 2019

Theme keywords:
Keywords:  Inland Waters, Elevation, Single Beam, Bathymetry

Thesaurus name:
Title:  ISO 19115 Topic Categories

Theme keywords:
Keywords:  Inland Waters, Elevation, Single Beam, Bathymetry

Thesaurus name:
Title:  ISO 19115 Topic Categories

Theme keywords:
Keywords:  Inland Waters, Elevation, Single Beam, Bathymetry

Thesaurus name:
Title:  ISO 19115 Topic Categories

Theme keywords:
Keywords:  Inland Waters, Elevation, Single Beam, Bathymetry

Thesaurus name:
Title:  ISO 19115 Topic Categories

Theme keywords:
Keywords:  Sonar, Singlebeam, Bathymetry

Theme keywords:
Keywords:  Sonar, Singlebeam, Bathymetry

Theme keywords:
Keywords:  Sonar, Singlebeam, Bathymetry

Descriptive keywords:
Keywords:  Downloadable Data

Thesaurus name: ArcGIS Content Type
Abstract:  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in the shoals to supplement a December 2018 interferometric survey by USGS, to validate other datasets, and to replace outdated and inaccurate data in some areas.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. The data were collected in NAD83 (California State Plane Zone II coordinate system) and NAVD88 datums.• Survey Dates: August 5-8, 2019 • Instrumentation: Singlebeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. • Point Spacing: about 1 Foot• Horizontal Units: US Foot• Vertical Units: US Foot• Related datasets: Sacramento Deep Water Ship Channel Multibeam, August 2019; USGS Sacramento Deep Water Ship Channel Multibeam, December 2018 (EXTERNAL);

Purpose: This bathymetric dataset is intended to be used as a base component of studies in the Sacramento-San Joaquin Delta. 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 3.1, dated September 11, 2019. 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.

Dataset language:  eng
Dataset character set:  utf8

Status:  completed
Maintenance:
Update frequency:  asNeeded


Resource constraints:
Constraints:
Limitations of use: Not for use as a navigation aid. The data reflects measurements taken at specific time periods and the Department of Water Resources makes no claim as to the current state of these waterways. Do not share or publish this data without including proper attribution.The original source projection of the DWR GIS atlas dataset was California Teale Albers, NAD83. For copies of data in original projection, please contact DWR directly.

Resource constraints:
Legal constraints:
Limitations of use: 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 3.1, dated September 11, 2019. 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. The official DWR GIS steward for this data set is Lillian Hayden, who may be contacted at 916-376-1979, or at lillian.hayden@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the official GIS steward as available and appropriate.

Spatial representation type:  vector

Processing environment:  Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388

Extent:
Extent description: Washington Lake and Sacramento Deep Water Ship Channel shoals from Industrial Blvd. overpass to the northern end of Prospect Island

Vertical extent:
Minimum value: -36.4601
Maximum value: 3.1799
Extent:
Geographic element - Bounding rectangle:
Extent contains the resource: true
West longitude: -121.657988
East longitude: -121.539125
North latitude: 38.572528
South latitude: 38.293283
Supplemental information: Equipment and Methodology Survey Vessel: 18 ft Kingfisher 1825 Falcon XL Singlebeam Sonar Bathymetry System: Receiver: Odom EchoTrac CV100 Transducer: Odom SMSW200-4a 200 kHz Position/GPS: Applanix POS MV WaveMaster II Motion control: Applanix POS MV WaveMaster II Sound velocity: AML Base X2 Sound Velocity Profiler Field Practices: Field calibration tests (including sound velocity readings, and manual depth soundings) were regularly performed in order to ensure data quality and positional accuracy. Singlebeam data were collected on the survey vessel and recorded using Hypack Hydrographic Survey software (Hypack). Data were processed in the Hypack SBMAX singlebeam editor, exported as a text file, and imported to a geodatabase with ArcGIS software. For more detailed information please see the Data Quality Section.

Credits: California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.

Point of contact - pointOfContact: 
Organization's name: California DWR, DOE, Geomatics

Contact information:
Phone:
Voice: N/A
Address:
City: Sacramento
Administrative area: CA
Postal code: 95814
e-mail address: GIS@water.ca.gov

Spatial Representation - Vector:

Level of topology for this dataset:  geometryOnly
Geometric objects:
Object type:  point
Object count: 105680

Reference System Information:

Reference system identifier:
Value: 3857
Code space: EPSG
Version: 6.18.3(9.3.1.2)

Data Quality Information:

Scope of quality information:
Level of the data:dataset

Lineage:
Process step:
Description: This data set is comprised of elevation points collected using singlebeam sonar bathymetry equipment corrected with GPS position data. Sonar echograms are screened in Hypack Hydrographic Software and outliers, submerged aquatic vegetation, and noise are removed. Data are imported in ArcGIS Desktop as point feature classes and reviewed for consistency. Further products and analyses are carried out upon request. Metadata are established and the data are stored. Data processing was completed in September 2019.

Process contact - processor: 
Individual's name: Scott Flory
Organization's name: Department of Water Resources, Division of Regional Assistance, North Central Region Office, Bathymetry Data Collection
Contact's position: Senior Environmental Scientist

Contact information:
Phone:
Voice: 916-376-9603
Address:
Delivery point: 3500 Industrial Blvd.
City: West Sacramento
Administrative area: CA
Postal code: 95691
Country:  US
e-mail address: Scott.Flory@water.ca.gov
Hours of service: 8AM-5PM Weekdays
Contact instructions: Call or Email
Source data:
Level of the source data: This is an original dataset produced by the California Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support Section.

Source citation:
Title: 

Party responsible for the resource - originator: 
Organization's name: Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support

Data quality report - Conceptual consistency:
Measure description: These data were collected using advanced singlebeam sonar and GPS technologies. They are believed to be logically consistent. Visual inspection was conducted and data were reviewed in ArcGIS software packages.

Data quality report - Completeness omission:
Measure description: During the survey, areas near the water's edge and areas of shallow water depth were occasionally occupied by aquatic vegetation. Dense aquatic vegetation interferes with the sounder's ability to record reliable bathymetric information. Therefore, in order to properly represent the bathymetry of the entire channel, elevation data in most areas of the channel occupied by dense aquatic vegetation were omitted from the final data set and appear as gaps in the data.

Data quality report - Quantitative attribute accuracy:
Measure description: Elevations are generally believed to be characteristic of the channel-bed; however, in some heavily vegetated areas, these data may be more indicative of the elevation of the submerged vegetation, rather than the “bare earth” surface. In deeper areas with low visibility, this discrepancy may not be immediately apparent. “Noisy” patterns in the data are investigated during data processing using Hypack Software. These patterns may signify dense submerged vegetation and are typically filtered.

Evaluation method: GPS post processing was completed using Continuously Operating Reference Stations (CORS) and the National Geodetic Survey website at http://www.ngs.noaa.gov/CORS/.

Data quality report - Absolute external positional accuracy:
Measure description: Locational Quality: Determined to be no better than 1.5 feet horizontal. This statement has not been verified or approved by a licensed land surveyor. Documented instrument horizontal accuracy: Odom CV100 and transducer: n/a // POS MV System: 8 mm + 1 ppm x baseline length, Roll and Pitch 0.015°, Heading 0.03° // AML Base X2 SVP: n/a

Evaluation method: Positional accuracy Assessment Method 1 was used.

Data quality report - Absolute external positional accuracy:
Measure description: Documented vertical accuracy: Odom CV100 and transducer: 1 cm ± 0.1% of depth // POS MV System: 15 mm + 1 ppm x baseline length, Heave 5 cm or 5% // AML Base X2 SVP: 0.025 m/s

Evaluation method: GPS post processing was completed using Continuously Operating Reference Stations (CORS) and the National Geodetic Survey website at http://www.ngs.noaa.gov/CORS/.

Distribution Information:

Distributor:
Distributor information - distributor: 
Individual's name: Shawn Mayr
Organization's name: Department of Water Resources, Division of Regional Assistance, North Central Region Office, Hydrography and Technical Support
Contact's position: Senior Engineer

Contact information:
Phone:
Voice: 916-376-9664
Address:
Delivery point: 3500 Industrial Blvd
City: West Sacramento
Administrative area: CA
Postal code: 95691
Country:  US
e-mail address: Shawn.Mayr@water.ca.gov
Hours of service: 8AM-5PM Mon-Fri
Contact instructions: Call or email
Format:
Format name: Vector

Ordering process:
Terms and fees: To be determined.
Turnaround time: Call or email data request.

Format:
Format name: Feature Class

Metadata Information:

Metadata language:  eng
Metadata character set:  utf8


Last update:  2024-05-06

Metadata contact - pointOfContact: 
Organization's name: California DWR, DOE, Geomatics

Contact information:
Phone:
Voice: N/A
Address:
City: Sacramento
Administrative area: CA
Postal code: 95814
e-mail address: GIS@water.ca.gov
Scope of the data described by the metadata:  dataset
Scope name: dataset

Name of the metadata standard used: ISO 19139 Geographic Information - Metadata - Implementation Specification
Version of the metadata standard: 2007