Upper Santa Ana Valley – Riverside-Arlington
Statistics
- Basin Name
- Upper Santa Ana Valley – Riverside-Arlington
- Basin Number
- 8-002.03
- SGMA Basin Priority
- Very Low
- Critically Overdrafted
- No
- Hydrologic Region Name
- South Coast
- Counties
- Riverside, San Bernardino
Basin Notes
65.80% adjudicated basin. Western-San Bernardino Watermaster reports.
2003: Bulletin 118 basin description
2014: CASGEM basin prioritization – high. Comment: Water quality degradation issues known in several public supply wells.
2016: Basin boundary modified along with boundaries of Yucaipa 8-002.07, Bunker Hill 8-002.06, Rialto-Colton 8-002.04 subbasins to align with adjudicated areas
Revised basin boundary description
2018: Draft basin priority – High. Comment: 1) CASGEM/WDL/GWIDS: Longterm hydrographs show groundwater level decline. Source: DWR 2) Hydrographs of water levels at 3 selected wells, shown on Figures 2.7 and 2.8, demonstrate water level changes over time through different hydrologic conditions. Generally, these hydrographs show increasing water levels starting around 1960 and stabilizing or declining somewhat after the 1980s. Source: Arlington Basin Groundwater Management Plan, 2011 References: Santa Ana Watershed Project Authority
2018: Final Basin Prioritization: Very Low.
At-A-Glance
California Water Library Documents About This Basin
Bulletin No. 39-W, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1954
California Department of Water Resources (DWR) | June 1st, 1956
Bulletin No. 39-V, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1953
California Department of Water Resources (DWR) | August 1st, 1955
Bulletin No. 39-T, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley, Water Supply Summary for Southern Portion of California 1951
California Department of Water Resources (DWR) | June 1st, 1955
Bulletin No. 39-S, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1950
California Department of Water Resources (DWR) | April 1st, 1955
Bulletin No. 39-R, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley
California Department of Water Resources (DWR) | July 1st, 1954
Bulletin No. 39-B, South Coastal Basin Investigation, Records of Ground Water Levels at Wells for the Year 1933, Precipitation Records for the Season 1932-33
California Department of Water Resources (DWR) | January 1st, 1934
Wells of Southern California
Scientific American | March 22nd, 1902
In the Series of Water Supply Irrigation Papers, the United States Geological Survey has in press, but not yet published, the “Wells of Southern California" (Nos. 59