Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Coastal Flood Hazard Composite Layer for the Coastal Flood Exposure Mapper

Published by Office for Coastal Management | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 08, 2025 | Last Modified: 2013-01-01T00:00:00.000+00:00
This is a map service for the Coastal Flood Hazard Composite dataset. This dataset was created by combining hazard zones from the following datasets: FEMA V zones, FEMA A zones, FEMA shaded X zones, NOAA OCM Flood Frequency zones, NOAA OCM potential sea level rise inundation of 3 ft above current Mean Higher High Water (MHHW), and SLOSH MOMs for category 3 hurricanes. This dataset was created to support the National Oceanic and Atmospheric Administration Office for Coastal Management's Coastal Flood Exposure Mapper application. The purpose of the online mapping tool is to provide coastal managers, planners, and stakeholders a preliminary look at exposures to coastal flooding hazards. The Mapper is a screening-level tool that uses nationally consistent data sets and analyses. Data and maps provided can be used at several scales to help communities initiate resilience planning efforts. Currently the extent of this dataset covers U. S. coastal areas along the Gulf of Mexico and Atlantic coasts. This is a cached map service. Tiles have been cached down to Level ID 15 (1:18,055).

Complete Metadata

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov