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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.
2003. U.S. Bureau of Reclamation, Mid-Pacific Region, MPGIS Service Center. Canal system center lines in the Central Valley of California and adjacent areas captured from 1:24,000-scale USGS topographic maps. Updates and mo...
2014. Stanislaus County (Calif.). This polyline dataset represents existing canals in Stanislaus County, California for 2014.
2005. Department of Conservation & Development, Contra Costa County. This dataset represents the Creeks' Drainages within Contra Costa, California. Latest data revision occurred in August 2005; Data was mapped and pr...
2004. Santa Clara Valley Water District (Calif.). This polyline dataset identifies all existing creeks and canals within Santa Clara County, California for 2004. Layer created by Santa Clara Valley...
2014. Stanislaus County (Calif.). This polyline dataset represents existing creeks in Stanislaus County, California for 2014.
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.
2010. County of Sonoma, Permit and Resource Management Department [PRMD] - Engineering, Drainage Review. The flood prone dataset represents a geographical area known as the Permit and Resource Management Department (PRMD) Flood Prone Ordinance 4467. Fl...
2011. Federal Emergency Management Agency. This polygonal dataset shows flood zones within Butte County, California. The Flood Zones file was given to Butte County GIS Division from Butte Co... Butte County (Calif.) -- Geographic Information Systems.
2010. County of Napa Conservation, Development Planning Department. Historic tidal wetlands along the San Francisco Bay as mapped from 1851 to 1897. Napa County (Calif.). County Of Napa.