Napa-Sonoma Valley – Sonoma Valley

Napa-Sonoma Valley – Sonoma Valley

Statistics

At-A-Glance

Located in California’s San Francisco Bay hydrologic region, the Napa-Sonoma Valley – Sonoma Valley is 44,846.18 acres in size. This High priority basin is home to an estimated 31,275 people (2010 value), which have been at a rate of . Napa-Sonoma Valley – Sonoma Valley is a(n) basin with approximately 1287 wells, of which approximately 42 are water supply wells. Groundwater accounts for approximately 64 percent of the basin’s water supply.

Source: CA DWR

Basin Notes

2003: Bulletin 118 basin description 

2007: Sonoma Valley Groundwater Management Program

2014: Sonoma Valley Groundwater Management Program Five Year Review and Update

2019: Basin boundary modification approved. Per DWR: It “revises and aligns the shared boundary between Sonoma Valley and Sonoma Lowlands to follow the shared Sonoma and Napa County line.” Phase 2 Draft prioritization: high.