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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...
2003. California. Department of Water Resources. This polyline dataset represents all inland waters for Shasta County, California in 2003. The hydrography layer consists of flowing waters (rivers ... Vestra Resources, Inc. .