Wilson Grove Formation Highlands

Wilson Grove Formation Highlands



Located in California’s North Coast hydrologic region, the Wilson Grove Formation Highlands is 86,400 acres in size. This Medium priority basin is home to an estimated 38,149 people (2010 value), which have been at a rate of . Wilson Grove Formation Highlands is a(n) basin with approximately 5767 wells, of which approximately 99 are water supply wells. Groundwater accounts for approximately 78 percent of the basin’s water supply.

Basin Notes

2003: Bulletin 118 basin description

2018: Draft 2018 Basin Prioritization Basin Results ‐ Part 15/18/2018

2018: Sonoma Valley Groundwater Sustainability Agency response to reprioritization

Basin boundary modification requests 1, 2 pending from Petaluma Valley 2-001 and Sand Point Area 2-027

GAMA report: “In the North San Francisco Bay study unit (Wilson Grove Formation Highlands, Alexander Valley, Santa Rosa Valley, Petaluma Valley, Lower Russian River Valley, Kenwood Valley, Volcanic Highlands, and Napa-Sonoma Valley GW basins), TDS was present at high concentrations (greater than the upper limit) in about 1% of the primary aquifers. About 7% of the primary aquifers had moderate TDS concentrations (between the recommended and upper limit), and about 92% had low concentrations (less than the recommended limit).”

GSA Information

Subject to SGMA No items found