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Lidar Elevation

Published by FEMA/Resilience/Risk Management Directorate | Department of Homeland Security | Metadata Last Checked: June 25, 2025 | Last Modified: 2025-02-03T14:11:54-05:00
Light Detection and Ranging (lidar) is a technology used to create high-resolution models of ground elevation with a vertical accuracy of 10 centimeters (4 inches).  rnrnFEMA collects lidar elevation data to support flood mapping. USGS is the primary Federal steward of lidar data. FEMA archives lidar data for FEMA projects where USGS does not manage the Lidar data collection. rnrnDatapoints include ground elevation models and vertical metrics for ground elevation.

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