FEMA 2023 Flood Risk Mapping Guidance

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Federal Emergency Management Agency. 2023. Guidance for flood risk analysis and mapping, floodway analysis and mapping. 63 pp.

• https://www.fema.gov/sites/default/files/documents/fema_rm-floodway-analysis-and-mapping-nov-2023.pdf

Notes

• This product defines methods that FEMA requests as part of the Letter of Map Revision processes
• This affects Flood Hazard Management as well as Ecology management of Floodplains
• Page 22 includes methods for weighting flood risk across a floodplain that might have application for streamlining the Letter of Map Revision process.