The Water Resources Unit is comprised of 2 teams:

Flood Management Team

The Flood Management team is responsible for providing all floodplain administration duties within the unincorporated areas of San Joaquin County. They process various permits; coordinate the improvement and maintenance of the area’s flood control system; provide engineering and technical support to the Channel Maintenance Team; and oversee the development and maintenance of technical and engineering services to various agencies and the public in the administration and investigation of projects for improved flood protection and monitoring floodplain management.
Flood Management also coordinates the County’s Storm Water Pollution Prevention Program, and they develop and administer of programs to achieve compliance with National Pollutant Discharge Elimination System (NPDES) regulations.

Water Resources Team

The Water Resources team engages in regional, long range planning for County-wide water issues, development of water rights and new surface water supply, groundwater management, monitoring of groundwater resources, and defending water supply and quality for future water resource sustainability in San Joaquin County and the San Joaquin Delta.
In coordination with other local and regional agencies, they protect and defend the County’s position on water issues in regional, State, and Federal activities that impact water users and the environment within the County. Water Resources coordinates the efforts multiple committees and authorities which prepare the Groundwater Sustainability Plan for their respective areas.
Established County water supply objectives are pursued through activities that include strategic planning and project implementation which address groundwater overdraft. Other activities include water right development on the Mokelumne and American Rivers.
Water Resources Manager
(209) 953-7460
Public Works Department
1810 East Hazelton Avenue
Stockton, CA 95205
Phone: (209) 468-3000
Hours: 8:00am to 5:00pm
Email us with questions at:

If your well has gone dry please go to DWR Household Water Supply Shortage Reporting System at

Governor's 2021 Declaration of Drought Emergency

Department of Water Resources Drought page and resources can be found here

Report to the Legislature on the 2012-2016 Drought

DWR Drought Brochure 2021

State Water Board Drought Year Water Actions

  • National Pollution & Elimination Discharge Elimination System (NPDES) permit compliance
  • Managing and improving the quality of stormwater discharges
  • Developing cost-effective programs for pollution prevention
  • Providing public outreach to encourage residents to implement best management practices for reducing pollutant loads in stormwater runoff
  • Preparing annual reports, including program effectiveness assessments
  • Flood control engineering and finance
  • Flood protection information
  • National Flood Insurance Program
  • Community Rating System ("CRS")
  • Flood Insurance Rate Maps (FIRMs)
  • Watercourse Encroachment Permits & Endorsements
  • Elevation Certificates
  • Flood Control System Violations
  • San Joaquin County Benchmarks