Numerical Models Meeting the Minimum Requirement of National Flood Insurance Program

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 Current Locally Accepted Coastal Models


  • 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).

Coastal Models

Hydrodynamic and Morphological Model: Determination of Coastal Storm Surge and Wave Height
Coastal Storm Surge and Coastal Wave Height
Delft 3D (FLOW, WAVE, MOR)Deltares,
Delft, The Netherlands
Rotterdamseweg 185,
Delft, The Netherlands
P.O. Box 177
2600 MH Delft, The Netherlands
tel: + 31 (0)15 285 8585
fax: +31 (0)15 285 8582
Delft3D is a suite of 2D and 3D models for the simulation of hydrodynamics, waves, sediment transport and morphology for fluvial, estuarine and coastal environments.

The FLOW module calculates non-steady flow and transport phenomena resulting from tidal and meteorological forcing on a curvilinear, boundary fitted grid.

The WAVE module incorporates the spectral wave model SWAN. The MOR module couples the FLOW and WAVE modules to simulate long-term changes in bottom topography.

Only accepted for usage within FEMA Region II. 

Public Domain: No

View More Locally Accepted Models

Nationally Accepted Models

Numerical Models No Longer Accepted

Last Updated: 
07/24/2014 - 16:00
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