No-rise Certification for Floodways
NFIP Policy Index
- Definition/Description
- NFIP Requirement
- Other Applicable NFIP Regulations
- Guidance
- Related Keywords
- Special Topic Resources
Definition/Description
Any project in a floodway must be reviewed to determine if the project will increase flood heights. An engineering analysis must be conducted before a permit can be issued. The community's permit file must have a record of the results of this analysis, which can be in the form of a No-rise Certification. This No-rise Certification must be supported by technical data and signed by a registered professional engineer. The supporting technical data should be based on the standard step-backwater computer model used to develop the 100-year floodway shown on the Flood Insurance Rate Map (FIRM) or Flood Boundary and Floodway Map (FBFM).
NFIP Requirement
Other Applicable NFIP Regulations
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- (c) (10)
- (d) (2)
Guidance
- IS-9 Managing Floodplain Development Through The National Flood Insurance Program (NFIP) (pages 5-22, 5-23, and 7-59) (PDF 8MB, TXT 1MB) (entire document)
Related Keywords
Special Topic Resources
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Encroachment Review (5-21 to 5-24)
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Example No-Rise Certification (5-23)
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Last Modified: Tuesday, 02-Feb-2010 14:41:47 EST