Final answer:
Communities that join the NFIP commit to adopting and enforcing floodplain management ordinances and ensuring properties in floodplains have adequate flood insurance coverage.
Step-by-step explanation:
When a community joins the National Flood Insurance Program (NFIP), it commits to two main responsibilities. Firstly, the community agrees to adopt and enforce a floodplain management ordinance that meets or exceeds FEMA guidelines. This ordinance typically includes zoning laws, building standards, and special requirements for construction in areas likely to be affected by flooding. Secondly, the community agrees to ensure that properties within the floodplain obtain adequate flood insurance coverage as a condition for receiving federal disaster assistance or for securing financing from federally backed institutions.