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2010. Teale Data Center. California Watershed Map: Version 2.2. This layer is composed of polygons at depict the boundary of the various watershed areas in Napa County. Napa County (Calif.). County Of Napa.
2007. Office of Emergency Services. Dam Inundation maps for the State of California are required by California Government Code Section 8589.5(b).
Inundation potential to cause damage... Sacramento (Calif.). Office Of Emergency Services.
3. Domestic_Wtr
2005. Napa County Conservation Department. Napa County's Domestic Water Supply Drainages pertaining to Napa County Ordinance 1219. Boundaries taken from the Drainages layer. Napa County (Calif.). County Of Napa.
4. drainages
2005. Jones Stokes. The Napa County Watersheds were generated from two elevation datasets. The Napa River Watershed was generated from LIDAR data processed by NCALM a... Napa County (Calif.). County Of Napa.
2008. Federal Emergency Management Agency (FEMA). The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary... Napa County (Calif.). County Of Napa.
2000. County of Marin. Data are a graphic representation of Flood Control Zone boundaries in Marin County, California. San Rafael (Calif.). County Of Marin Community Development Agency.
7. Groundwater
2003. Groundwater Basins for Marin County. Data was downloaded from http://gis.ca.gov/data_index.epl and reprojected from NAD 27 meters. Attributes not... San Rafael (Calif.). County Of Marin.
2010. Sacramento County GIS. Line representation of streams and rivers in Sacramento County. Sacramento Area Council of Governments.
2014. Santa Cruz County GIS. This shapefile represents lakes in Santa Cruz County, California. .
10. major basins
2005. Jones Stokes. The Napa County Watersheds were generated from two elevation datasets. The Napa River Watershed was generated from LIDAR data processed by NCALM a... Napa County (Calif.). County Of Napa.