20221208 16180200 FALSE 20240123 15273300 20240507 7565300 i07_Habitat_Delta_1977 -13564391.372600 -13489578.823200 4523859.382400 4664611.219400 1 9.901 002 Projected GCS_WGS_1984 Linear Unit: Meter (1.000000) <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>PROJCS[&quot;WGS_1984_Web_Mercator_Auxiliary_Sphere&quot;,GEOGCS[&quot;GCS_WGS_1984&quot;,DATUM[&quot;D_WGS_1984&quot;,SPHEROID[&quot;WGS_1984&quot;,6378137.0,298.257223563]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Mercator_Auxiliary_Sphere&quot;],PARAMETER[&quot;False_Easting&quot;,0.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,0.0],PARAMETER[&quot;Standard_Parallel_1&quot;,0.0],PARAMETER[&quot;Auxiliary_Sphere_Type&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>10000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem> WGS_1984_Web_Mercator_Auxiliary_Sphere 1.0 FGDC CSDGM Metadata 150000000 5000 FGDC ArcGIS Metadata 1.0 Geographical Information Center i07_Habitat_Delta_1977 <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>1977 Delta Habitat Types were made digital by heads up digitizing registered scanned pages from 1979 Delta Environmental Atlas, produced by USACE. "The Habitat Types &amp; Vegetation section delineates on 1 inch to 1000 foot scale aerial photographs the habitat types found in the Delta, described according to the classification system of the US Fish &amp; Wildlife Service. Thirteen habitat types are defined in this Atlas. The system was based on a USFWS for its national wetland mapping program....The system was modified to include those terrestrial habitats, such as upland, agriculture, and urban, which were not included in the USFWS system. In addition, an open water classification was used in place of the USFWS river classification where the bottom type could not be identified." -excerpts from the 1979 USACE Delta Environmental Atlas, 7/1979. Digital images were clipped prior to warping to reduce risk of error during processing due to excess background. Digital clipped images were registered to USGS DOQQ's in ArcView 3.x(ESRI) utilizing Imagewarp 2.x extension. 23 October, 2002. Projection: UTM meters zone 10, nad 83. Accuracy within acceptable 7.5 Minute USGS map accuracy standards (1:24000 scale). For this set, the minimum number of control points used was 6 with an average of 8 to 9 points used. The pixel size for this set is 5.0 feet per pixel. User notes about the accuracy of this dataset (J Dudas, 1/24/2003): The goal of this project was to produce positionally accurate polygons which preserved the polygon areas/shapes as indicated in the Atlas plates. Chico State registered the scans to UTM Zone 10/NAD83, but it was clear that the scans had all sorts of distortions in them for a couple of fundamental reasons. The original Corps Atlas maps appear to have been produced by a fairly rough mosaicking, and as a result do not always correspond particularly well with DOQQs. Furthermore, the warping in the photos appears to get worse near the edges of the source photos, which suggests to me that the original photos were used in their entirety, rather than clipped, in effect a sidelap/overlap of 0%. As a result, the polygons were modified to reflect where some of these areas appeared in the 1993 DOQQs, for example, a channel island or a stretch of forest. In other words, the Corps Atlas polys were used to produce the shape geometry, and then the 1993 DOQQs provided the base for the actual poly locations. This will explain the positional offset seen between these polys and the scanned Atlas photos.</SPAN></P></DIV></DIV></DIV> Digital Archive from distributed 1979 Atlas of the Delta Habitat Types. 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. Delta California 1977 Habitat Types of Delta Region Delta California Habitat Types of Delta Region 1977 1979 DWR GIS Atlas publication date Published to DWR Spatial Data Library 2/21/2003. Published as an export to geoDB feature class output. Source to Library is DWR Delta Levees Program. These data are distributed as part of the DWR Spatial Data Library. Please advise dataset administrator of any improvements or suggestions for these data, or if additional metadata can be contributed. The state of California, the Department of Water Resources, the Programs, and the individuals working in support of any of the preceding shall have no legal responsibility for providing data to the DWR Spatial Data Library, and shall have no responsibility for any errors or omissions, or for the use or results obtained from the use of this information. User acknowledges and accepts these terms upon receipt of display of any of the contents of any of the files associated with these data. Work conducted under contract with CSU Chico State by DWR Delta Levees during 2002-03. Chico State registered mapped aerials found in an archived copy of the Atlas from Delta Levee Program files. Reviewed, modified, cataloged 1/2003 (J Dudas). 1/23/2003: Original shapefile dissolved using ArcGIS 8.2 GeoProcessing tool. 2/21/2003: Converted from UTM Zone 10/NAD83 to Geographic/NAD83 using ArcGIS 8.2, double-precision. Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388 1 -121.851001 -121.178948 38.600529 37.605602 USACE <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN>The original source projection of the DWR GIS atlas dataset was Web Mercator (Auxiliary Sphere), WGS84. For copies of data in original projection, please contact DWR directly.</SPAN></P></DIV></DIV></DIV> atlas_wmas.SDE.i07_Habitat_Delta_1977 Feature Class 18 TYPE Min_TYPE String 254 0 0 Shape Feature geometry. ESRI Coordinates defining the features. Shape Geometry 4 0 0 SYMBOL SYMBOL String 254 0 0 Shape.STArea() Shape.STArea() Double 0 0 0 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 Last_Modified_Date Last_Modified_Date Date 8 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 Cnt_SYMBOL Cnt_SYMBOL Integer 4 10 0 Date_Data_Refers_To Date_Data_Refers_To Date 8 0 0 Last_Modified_By Last_Modified_By String 255 0 0 Comments Comments String 255 0 0 Feature Class dataset EPSG 6.18.3(9.3.1.2) 18 Simple FALSE 18 TRUE FALSE 20240507 Locational Quality: Locational quality is not applicable to this dataset. This report is not being made by a licensed land surveyor, and is not analogous to a positional accuracy statement as stipulated in the California Public Resources Code. 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