San Joaquin Valley – Madera

Source: CA DWR

San Joaquin Valley – Madera



Located in California’s San Joaquin River hydrologic region, the San Joaquin Valley – Madera is 347,572 acres in size. This High priority basin is home to an estimated 106,993 people (2010 value), which have been at a rate of 51. San Joaquin Valley – Madera is a(n) basin with approximately 7231 wells, of which approximately 120 are water supply wells. Groundwater accounts for approximately 97.66 percent of the basin’s water supply.

Source: CA DWR
Source: CA DWR

Basin Notes

2003: Bulletin 118 basin description

2014: CASGEM basin prioritization – high. Comments: subsidence, critical overdraft, water quality degradation

2016: Basin boundary modification approved with Chowchilla 5-022.05 and Delta Mendota 5-022.07

Revised basin boundaries description

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

GSA Information


No SGMA news found for this basin.
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