Guidance for Flood Risk Analysis and Mapping: Accepting Numerical Models for Use in the NFIP [open pdf - 324KB]
From the Introduction: "For communities and mapping partners reference and information, Federal Emergency Management Agency (FEMA) maintains website lists of numerical models meeting minimum regulatory requirements as a means of ensuring consistency in implementing Title 44, Chapter 1, of the Code of Federal Regulations (44 CFR) Paragraph 65.6(a)(6) of the National Flood Insurance Program (NFIP) regulations. That paragraph explains conditions under which a computer model can be used for flood hazard mapping in the NFIP. These lists are organized by the area of responsibility of the certifying agency: Nationally Accepted Models and Locally Accepted Models. Four lists fall under the Nationally Accepted Models: coastal; hydrologic; hydraulic; and statistical models. Two lists fall under the Locally Accepted Models: hydraulic and hydrologic models developed to address particular local conditions. Locally Accepted Models are applicable only for the specific local areas for which they have been accepted and are not applicable nationwide."
Guidance Document 98
U.S. Federal Emergency Management Agency: https://www.fema.gov/