Public Works is responsible for maintaining the City's storm water infrastructure and engineering improvement projects to help reduce flooding during rain events.
The department reviews residential and commercial storm water development plans to ensure future construction and private development do not affect current drainage systems. The department also oversees the federal and state Municipal Separate Storm Sewer System (MS4) permit.
To schedule one-on-one site visits for expert guidance on property protection, retrofitting and drainage improvements, please call 210-206-8433.
To submit a storm water related service request, please call 3-1-1 or 210-207-6000 or make a report online.
Bexar County provides current flood updates and emergency road closure information.
A regional partnership between the Bexar County Commissioners Court, the City of San Antonio and the San Antonio River Authority that coordinates flood control and watershed management.
The CRS is a voluntary incentive program that recognizes and encourages community floodplain management practices that exceed the minimum requirements of the National Flood Insurance Program (NFIP).
For more information on how to obtain an Elevation Certificate for your property address, please call 210-206-8433.
Digital Flood Insurance Rate Maps (DFIRM) approved by the Federal Emergency Management Agency (FEMA).
Federally regulated insurance program which allows the City to enforce floodplain management standards and allows property owners and renters to purchase flood insurance.
Provides information on flood facts, flood insurance, flood preparedness and flood resources.
Provides access to the Digital Data and Modeling Repository (D2MR) and information on what makes a river unhealthy.
Covers how fees are calculated and how they fund drainage services and flood control projects.
Appendix A of the UDC lists definitions and rules of interpretation.
Provides stream gage data, including gage height, discharge, and precipitation values. Users can search by selecting a colored dot on the map and clicking "More Data."
Provides safety steps to follow if you are caught in a flash flood while walking or driving.
Annual Hazard Mitigation Plan Report (2022)(PDF, 268KB)