High-Resolution Digital Terrain Models of the Sacramento/San Joaquin Delta Region, California
The U.S. Geological Survey (USGS) Western Region Geographic Science Center, in conjunction with the USGS Water Resources Western Branch of Regional Research, has developed a high-resolution elevation dataset covering the Sacramento/San Joaquin Delta region of California. The elevation data were compiled photogrammically from aerial photography (May 2002) with a scale of 1:15,000. The resulting dataset has a 10-meter horizontal resolution grid of elevation values. The vertical accuracy was determined to be 1 meter. Two versions of the elevation data are available: the first dataset has all water coded as zero, whereas the second dataset has bathymetry data merged with the elevation data. The projection of both datasets is set to UTM Zone 10, NAD 1983. The elevation data are clipped into files that spatially approximate 7.5-minute USGS quadrangles, with about 100 meters of overlap to facilitate combining the files into larger regions without data gaps. The files are named after the 7.5-minute USGS quadrangles that cover the same general spatial extent. File names that include a suffix (_b) indicate that the bathymetry data are included (for example, sac_east versus sac_east_b). These files are provided in ESRI Grid format.
Citation Information
Publication Year | 2008 |
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Title | High-Resolution Digital Terrain Models of the Sacramento/San Joaquin Delta Region, California |
DOI | 10.3133/ds359 |
Authors | Tom Coons, Christopher E. Soulard, Noah Knowles |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Data Series |
Series Number | 359 |
Index ID | ds359 |
Record Source | USGS Publications Warehouse |
USGS Organization | Geographic Analysis and Monitoring Program |