Floodplain Management Office

Choyce Morrow, P.E. CFM, Manager




The City of Houston’s Floodplain Management Office (FMO) is part of the Houston Public Works and is located at the Houston Permitting Center. The office is responsible for permitting all construction activity within the City of Houston’s Special Flood Hazard Area (500-year floodplain, 100-year floodplain and floodway) in accordance with the provisions of the City of Houston’s floodplain ordinance and regulations set by the Federal Emergency Management Agency (FEMA).

The office:

  • Issues floodplain development permits for any construction activity in the floodplain
  • Inspects construction projects for conformance with floodplain development permit requirements
  • Manages Letters of Map Change (such as CLOMRs, LOMRs, CLOMAs and LOMAs)Reviews drainage plans for platting
  • Provides floodplain maps, flood insurance and other floodplain information to the public
  • Implements the City’s Community Rating System program
  • Maintains the City’s Floodplain Management Plan
  • Assists with flood disaster recovery

Chapter 19 

Chapter 19 Ordinance

Letter of Map Change Process

Floodplain Information and Frequently Asked Questions (FAQ's)



Sims Bayou Update

Sims Bayou Federal and Regional Project Map
Sims Project Completion and Letter of Map - Press Release

2018 Floodplain Management Plan

The 2018 FMP is being developed by the City’s FMP Committee to document and coordinate the City’s floodplain management activities for the purpose of:

  • Reducing flood losses and impacts from flooding
  • Improving protection of the floodplain’s natural and beneficial functions
  • Supporting flood mitigation activities
  • Promoting awareness and attention to the City’s flooding problems
  • Fulfilling the requirements of the Community Rating System to maintain National Flood Insurance Program premium discounts for Houston’s flood insurance policy holders with standard rate policies in the 100 year and 500 year floodplains.

To learn more, follow the below link to view or download the plan. Your comments are encouraged! Email the City’s Floodplain Management Office to offer comments about the FMP.

New Elevation Certificates and FEMA Floodproofing Certificates Now Required – Effective January 1, 2017 

Effective January 1, 2017, the Floodplain Management Office will no longer accept expired Elevation Certificates nor expired National Flood Insurance Program (NFIP) Floodproofing Certificates. For each certificate, the expiration date can be found in the top right corner of the document. For the newest version of the Elevation Certificate, click here. The Floodproofing Certificate (for non-residential buildings only) can be found on the Federal Emergency Management Agency website here.

The Elevation Certificate, a tool of the NFIP, is used to provide elevation information for ensuring compliance with floodplain management ordinances, for determining the proper insurance premium rate, and for supporting a request for a Letter of Map change. The NFIP Floodproofing Certificate is used to certify a floodproofing design for non-residential buildings that are permitted as an alternative to elevating to or above the Base Flood Elevation (BFE).

For questions regarding this requirement, please contact the Floodplain Management Office at 832-394-8854 or fmo@houstontx.gov.

For insurance agents within the City of Houston, you may request a copy of an Elevation Certificate by calling our Floodplain Management office at 832-394-8854. Only elevation certificates submitted as part of the permitting process are kept on file at the Houston Permitting Center at 1002 Washington Ave. Houston, TX 77002. 


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For information on Flood Awareness see pages 22-23 in the Community Connections section of the January 2015 Houston 'YP' The Real Yellow Pages directory.