4,670 ft Sweetwater Authority Desalination Facility San Diego River Basin Tijuana River Basin Otay River Basin Sweetwater River Basin San Diego River Basin Otay River Basin San Dieguito River Basin Sweetwater River Basin Sweetwater River Basin Pueblo Drainage Basin San Miguel Mtn Sweetwater Reservoir Otay Reservoir Tijuana River Basin Sweetwater River Basin Otay River Basin MEXICO UNITED STATES San Diego River Basin San Dieguito River Basin San Diego River Basin Los Penasquitos Creek Basin SDEP SDSW SDOR SDMC SDNB SDAQ SDMC SDSW SDOT SDBW SDBP Otay Mtn SDAQ Pacific Ocean Pacific Ocean Pacific Ocean Pacific Ocean Preliminary Subject to Revision Preliminary Subject to Revision Tijuana Tecate National City Santee Chula Vista Rosarito Escondido Creek Cotton Lower Otay Reservoir wood Creek Sweetwater Reservoir El Capitan Reservoir Lake Cuyamaca San Vicente Reservoir Loveland Reservoir Barrett Lake Lake Morena SALTON SEA Baja California California San Diego River Otay Tijuana River River United States Mexico Shaded relief base from U.S. Geological Survey digital elevation data, 1:24,000-scale 0 10 20 MILES 20 KILOMETERS 0 10 32 45’ 33 00’ 32 30’ 32 15’ 33 15’ 117 00’ 117 15’ 117 30’ 116 30’ 116 45’ 116 15’ 116 00’ 117 00’ 117 15’ 116 30’ 116 45’ 116 15’ 116 00’ Vista Imperial County San Diego County Escondido San Marcos Laguna Mountains Coastal Basins of San Diego County, California, and Northern Baja California, Mexico Local features and Groundwater sites in Coastal River basins, San Diego County, California Presa Aberardo L. Rodriguez Penasquitos watershed South Bay Wastewater Treatment Plant Ysabel Santa Creek Lake Hodges 94 94 54 56 52 8 8 5 5 5 15 15 805 805 79 79 78 76 76 67 67 Lake Sutherland Miramar Reservoir Encinitas Sweetwater River Basin San Dieguito River Basin Pueblo watershed SDCC SDHF SDBP SDHF SDSY SDSY SDCP SDCP Hydrogeology of Coastal Drainage Basins of San Diego County, California, 2012 PLATE 1-Coastal drainage basins and locations of realtime sites in San Diego County, California By Wesley R. Danskin, 2010 SDAQ SDBP SDMC SDNB SDBW SDSW SDOT SDOR Study area CALIFORNIA U.S.A. Precipitation (Atmosphere site) Ground-Water (USGS Multiple-Depth Sites) Lake gage Stream gage USGS Realtime sites-06-29-2009 EXPLANATION Fault Concealed Approximately located Inferred Inferred, queried Pacific Ocean Point Loma ocean outfall South Bay ocean outfall Point Loma Wastewater Treatment Plant 18,970 ft Islas De Los Coronados Study area boundary La Jolla Canyon Oceanside Carlsbad San Diego El Cajon La Mesa Solana Beach Del Mar San Dieguito River Basin Sweetwater River SDSY SDEP SDCP SDHF SDCC