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Levees

Published by City of Washington, DC | District of Columbia | Catalog Last Checked: June 30, 2026 at 07:52 PM | Dataset Last Updated: June 24, 2026 at 01:07 PM
Levee data contains information about levees shown on the FIRMs that are accredited and known to be protecting against the 1% annual-chance flood, as well as levees that are provisionally accredited, and non-accredited. The purpose of this table is to document the accreditation status of levees, as well as associated information necessary to be shown on the FIRM. The spatial entities representing levees are lines, drawn at the centerline of levees, floodwalls and levee closure structures

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