- HUD Guidance
Date Published: February 2018
Critical actions are activities where even a slight risk of flooding would be too great, because of the potential loss of life, injury to persons, or damage to properties. This applies to hospitals, nursing homes, fire and police stations, and roads providing sole egress from flood-prone areas.
This document provides a flowchart that allows the user to determine whether a project complies with Part 55.
Guidance is also available on Part 55 Floodplain Management Compliance: Non-Critical Actions.