San Francisco Bay and Sacramento-San Joaquin Delta DEM version 3 (Superseded)

This product is developed based on synthesizing LiDAR, single- and multibeam sonar soundings and existing integrated maps collated from multiple sources. The following figure shows the data sources used for different areas. The western part of our Bay-Delta work blends the original Foxgrover map with the 1/3 arc second DEM produced by NOAA.

These are close in the region of overlap and edge-matches the NOAA data well, but the NOAA map seems to capture things like bridge footings that the original 10m Foxgrover map of the region smooths. A richer 2m product combining new data and some interpolation is due to be release by USGS in Winter or Spring 2013. Our previews of this map indicate that it is heavily based on the 1/3 arc second NOAA map for points near Carquinez Straits.

For more information, please refer to the article: A Continuous Surface Elevation Map Please note that we distribute only our own integrated maps, not the original constituent data. Version: 3 Time Completed: November, 2012 Horizontal Datum: NAD83 Spheroid: GRS1980 Projection: UTM_Zone_10N Vertical Datum: NAVD88 ## Data Sources data.cnra.ca.gov/dataset/san-francisco-bay-and-sacramento-san-joaquin-delta-dem-v3/resource/36a1a7b0-895e-4b10-bc78-1962f523fb05 ## Coverage Areas data.cnra.ca.gov/dataset/san-francisco-bay-and-sacramento-san-joaquin-delta-dem-v3/resource/9e7c5963-ba33-4b3d-91a9-5e45671faad4