San Joaquin Valley – Cosumnes

Source: CA DWR

San Joaquin Valley – Cosumnes



Located in California’s San Joaquin River hydrologic region, the San Joaquin Valley – Cosumnes is 210,276 acres in size. This Medium priority basin is home to an estimated 49,560 people (2010 value), which have been at a rate of 12.19. San Joaquin Valley – Cosumnes is a(n) basin with approximately 3140 wells, of which approximately 33 are water supply wells. Groundwater accounts for approximately 86.92 percent of the basin’s water supply.

Source: CA DWR
Source: CA DWR

Basin Notes

2003: Bulletin 118 basin description

2014: CASGEM basin prioritization – medium

2016: Basin boundary modification requests: accepted with Eastern San Joaquin subbasin 5-022.01 and reviewed, one accepted, one denied for Sacramento Valley – South American 5-021.65 

Revised basin boundaries description

2018: Draft basin priority – medium. Ground water level comments:

GSA Information

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