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Department of Public Works


For more information contact Matt Zidar at (209) 953-7460      



  •  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


  • 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

Sustainable Groundwater Management Act (SGMA)  

View the Eastern San Joaquin Draft Groundwater Sustainability Plan (GSP)  

Storm Water Pollution Prevention Program (NPDES) 

San Joaquin County Water Resources Management Planning Update - Mokelumne Forum  

San Joaquin County Water Management Plan Phase I - Analysis / Strategy  

Final Groundwater Banking Authority System Plan April 2002  

American River Water Availability Analysis  

MORE WATER Project Phase I 02/24/04 Board of Supervisors Presentation  

Groundwater Management Plan Presentation  

Final Eastern San Joaquin Groundwater Basin Management Plan  

Board Adopts County Water Plan. Presentation on the Water Management Plan