Gilroy-Hollister Valley – Llagas Area

Statistics

At-A-Glance

Located in California’s Central Coast hydrologic region, the Gilroy-Hollister Valley – Llagas Area is 47,371 acres in size. This High priority basin is home to an estimated 88,905 people (2010 value). It has approximately 2178 wells, of which approximately 92 are water supply wells. Groundwater accounts for approximately 40.22 percent of the basin’s water supply.

Source: CA DWR
Source: CA DWR

Basin Notes

2003: Bulletin 118 basin description

2016: Basin boundary modification approved

Revised basin boundary description

December 21: Alternative Groundwater Management Plan (approved by DWR)

2018: Basin prioritization groundwater level comment – [Santa Clara Valley Water District ]Annual Report shows stable longterm hydrographs for the most part. Source: 2018 Final Basin Prioritization: Basin status remains unchanged at high priority.

2019: June 17 – Alternative plan to GSP approved by DWR

2024: June 27 – Alternative Plan review successful; re-approval

GSA Information