Floodplain & FEMA Resources in Texas
Verified floodplain information pages, FEMA flood map tools and flood-related engineering resources.
Harris County
View city hub →What HCFCD Atlas 14 criteria apply to drainage and detention design?
Where can I find HCFCD drainage, hydrology, Atlas 14, LID, CAD, and flood-control manuals?
Where can I find the HCFCD Hydrology and Hydraulics Guidance Manual?
What HCFCD interactive flood and mapping tools are available?
Where can I find HCFCD LOMR delegation guidance?
Where can I find HCFCD flood models and mapping resources?
Nationwide (FEMA)
View city hub →How do I change my FEMA flood zone or get a LOMA or LOMR?
How do I check whether my property is in a FEMA flood zone?
What natural hazards affect my property or community besides flooding?
What is the NOAA Atlas 14 rainfall depth for my project location?
How do I delineate a drainage area or get watershed flow statistics?
What watershed, stream, or waterbody is my site connected to?
Statewide (Texas)
View city hub →Is there a statewide Texas flood-risk dataset beyond FEMA mapped areas?
Where can I find Texas water-service boundaries and TWDB map tools?
What official flood maps and flood datasets are available in Texas besides FEMA FIRM maps?
Where can I download Texas regional flood planning GIS data?
Where can I find the current TxDOT Hydraulic Design Manual?
Where can I view the Texas State Flood Plan and regional flood-plan information?
Fort Bend County
View city hub →Where can I find Fort Bend County drainage, inundation, LIDAR, and flood maps?
Where can I find Fort Bend County FEMA floodplain information?
Pasadena
View city hub →Where can I find Pasadena floodplain, elevation certificate, utility and engineering resources?
Jersey Village
View city hub →Is my Jersey Village property in a floodplain?
Related ALFA Engineering services
External government and agency resources are provided for convenience. Requirements, forms and URLs may change. Confirm current requirements with the applicable jurisdiction. ALFA Engineering is not the issuing government agency.