Santa Rosa Valley – Santa Rosa Plain

Statistics

Basin Name

Basin Number

1-055.01

SGMA Basin Priority

High

Critically Overdrafted

Hydrologic Region Name

North Coast

Counties

Sonoma

Adjacent Basins

Lower Russian River Valley 1-060, Santa Rosa Valley - Rincon Valley 1-055.03, Santa Rosa Valley - Healdsburg Area 1-055.02, Alexander Valley - Alexander Area 1-054.01, Wilson Grove Formation Highlands 1-059, Petaluma Valley 2-001,

At-A-Glance

Located in California’s North Coast hydrologic region, the Santa Rosa Valley – Santa Rosa Plain is 80,124 acres in size. This High priority basin is home to an estimated 250,016 people (2010 value), which have been at a rate of 16.95.

Santa Rosa Valley – Santa Rosa Plain is a(n) basin with approximately 6943 wells, of which approximately 158 are water supply wells. Groundwater accounts for approximately 50.03 percent of the basin’s water supply.

Source: CA DWR

2003: Bulletin 118 basin description

Sonoma County Water Agency

2014: Santa Rosa Plain Watershed Groundwater Management Plan

May 2018: basin proposed for high priority status

2019: basin boundary modification approved changing a portion of the e boundary between the Santa Rosa Plain subbasin and the Wilson Grove Formation Highlands basin consolidating the City of Sebastopol, Belmont Terrace Mutual Water Company (MWC), Fircrest MWC, and Kelly MWC within the Santa Rosa Plain subbasin. Phase 2 Draft basin priority: medium.