Numerical Models Meeting the Minimum Requirement of the National Flood Insurance Program

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Current Nationally Accepted Statistical Models

DISCLAIMERS

  • This website lists models, where the compliance with the requirements of 44 CFR 65.6(a)(6) has been previously demonstrated for use in FEMA flood hazard studies and/or mapping efforts. The lists include models that Professional Engineers can use to perform engineering analysis and mapping for flood insurance studies, however a model’s inclusion on this list does not indicate whether its approval or certification is current as to any other governmental agency. Professional Engineers are ultimately responsible for the appropriate application and accuracy of the results.
     
  • FEMA is not responsible for technical support or accuracy of the results and has not evaluated the technical soundness of the models independently.
  • This list cannot be used as a marketing tool explicitly or implicitly anywhere.
     
  • FEMA updates its list as necessary, however, the accuracy of this list is not guaranteed. It is highly recommended that model selection is discussed with FEMA before undertaking or initiating any analysis intended to be submitted to FEMA.
     
  • FEMA provides this list for reference only, and in doing so, does not endorse any non-federal products, companies, or services. If you believe that any information provided on this page is inaccurate, please contact FEMA at 1-877-FEMA MAP (1-877-336-2627).

Statistical Models

Statistical Models
PROGRAM DEVELOPED BY AVAILABLE FROM COMMENTS
HEC FFA 3.1
(February 1995)
U.S. Army Corps of Engineers Water Resources
Support Center 1
Corps of Engineers
Hydrologic Engineering Center
609 Second Street
Davis, CA 95616-4687

www.hec.usace.army.mil/software/
Performs flood frequency analyses following Bulletin 17B, Guidelines for Determining Flood Flow Frequency, prepared by the Interagency Advisory Committee on Water Data (1982). Supersedes HECWRC.

Public Domain: Yes
HEC-SSP 1.1 (April 2009) and up U.S. Army Corps of Engineers Water Resources
Support Center 1
Corps of Engineers
Hydrologic Engineering Center
609 Second Street
Davis, CA 95616-4687

www.hec.usace.army.mil/software/
Performs flood frequency analyses following Bulletin 17B, Guidelines for Determining Flood Flow Frequency, prepared by the Interagency Advisory Committee on Water Data (1982).

Public Domain: Yes
PEAKFQ 2.4
(April 1998)
and up
U.S. Geological Survey U.S. Geological Survey 
Hydrologic Analysis Software Support Team
437 National Center
Reston, VA 20192
Performs flood frequency analyses following Bulletin 17B, Guidelines for Determining Flood Flow Frequency, prepared by the Interagency Advisory Committee on Water Data (1982).

PKFQWin is the Windows version of the PEAKFQ program.

Public Domain: Yes
FAN FEMA FEMA

and

Michael Baker Jr.
3601 Eisenhower Avenue
Alexandria, VA 22304
FAN, FEMA's Alluvial Fan Flooding software, is used to define special flood hazard information in areas subject to alluvial fan flooding. The model does not define the extent of the special flood hazard area (SFHA), rather, develops output information that can, in conjunction with soil, topographic, and geomorphic information, be used to divide the SFHA into zones of similar depth and velocity.

The minimum input required is the flood-frequency relation at the apex. Options allow for consideration of multiple flow paths with or without avulsions during flood events.

NFIP software list 

Public Domain: Yes

1 Program is typically distributed by vendors and may not be available through HEC. A list of vendors may be obtained through HEC.

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Locally Accepted Models

Numerical Models No Longer Accepted

Last Updated: 
07/24/2014 - 16:00
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