San Joaquin Valley – Merced

Source: CA DWR

San Joaquin Valley – Merced



Located in California’s San Joaquin River hydrologic region, the San Joaquin Valley – Merced is 512,959 acres in size. This High priority basin is home to an estimated 174,527 people (2010 value), which have been at a rate of 38.11.

San Joaquin Valley – Merced is a(n) basin with approximately 6126 wells, of which approximately 141 are water supply wells. Groundwater accounts for approximately 66.81 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

2018: Draft basin prioritization – high. Comments on groundwater level decline and subsidence:

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

2019: November 12 – GSP published under joint powers agreement by THE Merced Irrigation-Urban Groundwater Sustainability Agency (MIUGSA), THE Merced Subbasin Groundwater Sustainability Agency (MSGSA), and Turner Island Water District Groundwater Sustainability Agency (TIWD GSA)

2020: January 28 – GSP submitted to DWR

GSA Information

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