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National Estuary Program Study Area Boundaries

Published by U.S. EPA Office of Water (OW) - Office of Wetlands Oceans & Watersheds (OWOW) | U.S. Environmental Protection Agency | Metadata Last Checked: January 27, 2026 | Last Modified: 2011-11-28T00:00:00.000+00:00
There are 28 National Estuary Programs (NEPs) in the U.S.that implement habitat protection and restoration projects with their partners. This work takes place within their study area boundaries. NEPmap contains that data from 2009 to the present.

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