Bulletin 118
Groundwater Information Center Groundwater Basin Maps and Descriptions Hydrologic Regions of California: Colorado RiverBasins and Subbasins of the Colorado River Hydrologic Region
To access only the basin and subbasin descriptions for this Hydrologic Region, click on the individual basin/subbasin number below. To view a map of basin and subbasin boundaries and download individual or all basin and subbasin descriptions for this Hydrologic Region, go to DWR's Integrated Water Resources Information System (IWRIS) web site. IWRIS is a GIS-based web application that allows the user to access, query, integrate, and visualize different sets of data. For the instructions on how to view groundwater basin and subbasin maps, and download basin and subbasin descriptions, click on the How do I use IWRIS? link.
Basin/subbasin Basin name
7-1 Lanfair Valley
7-2 Fenner Valley
7-3 Ward Valley
7-4 Rice Valley
7-5 Chuckwalla Valley
7-6 Pinto Valley
7-7 Cadiz Valley
7-8 Bristol Valley
7-9 Dale Valley
7-10 Twentynine Palms Valley
7-11 Copper Mountain Valley
7-12 Warren Valley
7-13 Deadman Valley
7-13.01 Deadman Lake
7-13.02 Surprise Spring
7-14 Lavic Valley
7-15 Bessemer Valley
7-16 Ames Valley
7-17 Means Valley
7-18 Johnson Valley Area
7-18.01 Soggy Lake
7-18.02 Upper Johnson Valley
7-19 Lucerne Valley
7-20 Morongo Valley
7-21 Coachella Valley
7-21.01 Indio
7-21.02 Mission Creek
7-21.03 Desert Hot Springs
7-21.04 San Gorgonio Pass
7-22 West Salton Sea
7-24 Borrego Valley
7-25 Ocotillo-Clark Valley
7-26 Terwilliger Valley
7-27 San Felipe Valley
7-28 Vallecito-Carrizo Valley
7-29 Coyote Wells Valley
7-30 Imperial Valley
7-31 Orocopia Valley
7-32 Chocolate Valley
7-33 East Salton Sea
7-34 Amos Valley
7-35 Ogilby Valley
7-36 Yuma Valley
7-37 Arroyo Seco Valley
7-38 Palo Verde Valley
7-39 Palo Verde Mesa
7-40 Quien Sabe Point Valley
7-41 Calzona Valley
7-42 Vidal Valley
7-43 Chemehuevi Valley
7-44 Needles Valley
7-45 Piute Valley
7-46 Canebrake Valley
7-47 Jacumba Valley
7-48 Helendale Fault Valley
7-49 Pipes Canyon Fault Valley
7-50 Iron Ridge Area
7-51 Lost Horse Valley
7-52 Pleasant Valley
7-53 Hexie Mountain Area
7-54 Buck Ridge Fault Valley
7-55 Collins Valley
7-56 Yaqui Well Area
7-59 Mason Valley
7-61 Davies Valley
7-62 Joshua Tree
7-63 Vandeventer Flat
Colorado River Hydrologic Region Map
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