Completed
Making and maintaining an accurate flood map is neither simple nor inexpensive. Even after an investment of more than $1 billion to take flood maps into the digital world, only 21 percent of the population has maps that meet or exceed national flood hazard data quality thresholds.
Mapping the Zone examines the factors that affect flood map accuracy, assesses the benefits and costs of more accurate flood maps, and recommends ways to improve flood mapping, communication, and management of flood-related data.
Events
Right Now & Next Up
Stay in the loop with can’t-miss sessions, live events, and activities happening over the next two days.
TRB Annual Meeting | January 11 - 15, 2026
January 11 - 15, 2026 | The TRB Annual Meeting brings together thousands of transportation professionals worldwide for sessions across all modes and sectors.