Salinas Valley – Upper Valley Aquifer

Source: CA DWR

Salinas Valley – Upper Valley Aquifer


  • Basin Name
  • Salinas Valley – Upper Valley Aquifer
  • Basin Number
  • 3-004.05
  • SGMA Basin Priority
  • High
  • Critically Overdrafted
  • No
  • Status
  • Subject to SGMA
  • DWR Region & POC
  • South Central Regional Office
    Benjamin Gooding
    (559) 230-3359

  • Number of Wells
  • 371
  • Hydrologic Region Name
  • Central Coast Hydrologic Region
  • Counties
  • Monterey


Located in California’s Central Coast hydrologic region, the Salinas Valley – Upper Valley Aquifer is 98,172 acres in size. This High priority basin is home to an estimated 15,862 people (2010 value), which have been at a rate of 29.28. Salinas Valley – Upper Valley Aquifer is a(n) basin with approximately 371 wells, of which approximately 22 are water supply wells. Groundwater accounts for approximately 100 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

2015: Monterey County Water Resources Agency SGMA timeline

2018: Draft priority: high. Comment – Declining groundwater levels. See State of the Salinas River Groundwater Basin, Monterey County Water Agency,  January 16, 2015

Basin boundary request with Paso Robles Area subbasin 3-004.06 pending.

GSA Information

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