San Joaquin Valley – Kaweah

San Joaquin Valley – Kaweah



Located in California’s Tulare Lake hydrologic region, the San Joaquin Valley – Kaweah is 441,004 acres in size. This High priority basin is home to an estimated 271,618 people (2010 value), which have been at a rate of 48.85. San Joaquin Valley – Kaweah is a(n) basin with approximately 7474 wells, of which approximately 224 are water supply wells. Groundwater accounts for approximately 90.12 percent of the basin’s water supply.

Source: CA DWR

Basin Notes

2003: Bulletin 118 basin description

2014: CASGEM basin prioritization – high

2016: Basin boundary modification approved with Tulare Lake subbasin 5-022.11

2018: Draft priority – high. Groundwater level and subsidence comments:

  • CRITICAL OVERDRAFT. 1) CASGEM/WDL/GWIDS: Longterm hydrographs show groundwater level decline. Source: DWR 2) The continued pumping of groundwater has resulted in an overdraft of the groundwater basin, that is, more water has been pumped from the basin than has been recharged into the basin on a long-term basis. Even though over 3 million acre-feet of surface water has been imported into the District over the past 30 years in an effort to supplement local surface water supply and reduce dependence on groundwater, the average depth to groundwater within the Plan Area has continued to drop. – Source: Kaweah Delta Water Conservation District.
  • Sources: 1) Current Land Subsidence in the San Joaquin Valley, USGS; 2) 2014 – Land Subsidence from Groundwater Use in California, California Water Foundation / James W. Borchers / Michael Carpenter, Luhdorff & Salmanini, April 2014; 3) Progress Report: Subsidence in the Central Valley, California, Jet Propulsion Laboratory, California Institute of Technology, NASA 2015-16

2018 Final Basin Prioritization: Basin priority remains unchanged at high priority.

GSA Information

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