FEMA Install Sewer Backflow Valves - Protecting Your Property from Flooding Author(s) Federal Emergency Management Agency Organization(s) FEMA Publication Date April, 2008 Description Factsheet describing backflow valve benefits and tips.
Requirements for Flood Openings in Foundation Walls and Walls of Enclosures, Technical Bulletin 1 Author(s) Federal Emergency Management Agency Organization(s) FEMA Publication Date March, 2020 Description Technical bulletin describing National Flood Insurance Program (NFIP) requirements for flood openings in foundation walls and walls of enclosures below elevated buildings.