San Joaquin Valley – Pleasant Valley
- Basin Name
- San Joaquin Valley – Pleasant Valley
- Basin Number
- SGMA Basin Priority
- Critically Overdrafted
- Hydrologic Region Name
- Tulare Lake
Located in California’s hydrologic region, the San Joaquin Valley – Pleasant Valley is 48,196 acres in size. This Medium priority basin is home to an estimated 18,508 people (2010 value), which have been at a rate of 29.39. San Joaquin Valley – Pleasant Valley is a(n) basin with approximately 90 wells, of which approximately 0 are water supply wells. Groundwater accounts for approximately 94.56 percent of the basin’s water supply.
2014: CASGEM basin prioritization – low
2018: Draft basin priority – medium. Declining groundwater and subsidence comments:
- 1) CASGEM/WDL/GWIDS: Longterm hydrographs show groundwater level decline. Source: DWR 2) Basin Boundary modification request reports overdraft conditions as submitted by local managers. ” Most of these hydrographs indicate water-level declines through the early 1990s, then relatively stable levels from the early 1990s to about 2005. After 2005, water levels in many wells began to decline again. Water-level declines after 2005 in most wells ranged from about five to ten feet per year. Hydrographs in report appendix show long-term GWL decline.” Source: Technical Report on Hydrogeologic Conditions in Pleasant Valley Sub-Basin, March, 2016, Kenneth D. Schmidt and Associates Groundwater Quality Consultants for the Pleasant Valley Water District Coalinga, California downloadable at CA DWR SGMA Portal.
- 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 is changed from low to medium.