Arroyo Santa Rosa Valley
Statistics
- Basin Name
- Arroyo Santa Rosa Valley
- Basin Number
- 4-007
- SGMA Basin Priority
- Very Low
- Critically Overdrafted
- No
- Hydrologic Region Name
- South Coast
- Counties
- Ventura
- Adjacent Basins
Basin Notes
2014: CASGEM basin prioritization – Medium
2018: Draft basin prioritization – Very Low. Basin boundary modification request
2019: Basin boundary modification approved. Per DWR: It “follows geologic contacts on a qualified map. The modification increases the boundary’s accuracy by delineating the extent of alluvium on a more detailed scale than previously mapped, and it more accurately incorporates water- bearing formations into the Arroyo Santa Rosa Valley basin. The requesting agency supplies sufficient information to support the scientific rationale for the modification. The request meets regulatory requirements.”
Draft priority –Very Low.
Phase 2 (FINAL) priority – Very Low
At-A-Glance
California Water Library Documents About This Basin
California's Groundwater Conditions: Semi-Annual Update May 2025
California Department of Water Resources (DWR) | June 24th, 2025
This semi-annual report presents data received by DWR as of April 2025 and reflects the impacts of a few wet years after a drought period. However, it should be noted tha
Improved Imaging of the Large-Scale Structure of a Groundwater System with Airborne Electromagnetic Data
American Geophysical Union (AGU) | March 17th, 2022
A groundwater model is a representation of a groundwater system used to both understand the properties and processes of the subsurface, and to manage the groundwater reso
Water Supply Conditions in Southern California during 1958-1959, Volume II, Water Level Data, Central Coastal and Los Angeles Regions
California Department of Water Resources (DWR) | May 1st, 1961
Bulletin No. 39-58, Water Supply Conditions in Southern California during 1957-1958, Volume II, Precipitation and Water Level Data, Central Coastal and Los Angeles Regions
California Department of Water Resources (DWR) | August 1st, 1960
Bulletin No. 39-57, Water Supply Conditions in Southern California during 1956-1957, Volume II, Precipitation and Water Level Data Central Coastal and Los Angeles Regions
California Department of Water Resources (DWR) | June 16th, 1958
Bulletin No. 39-57 Volume I Bulletin No. 39-57 Volume III Bulletin No. 39-57 Volume IV