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DC Subwatersheds

Published by Department of Energy and Environment | District of Columbia | Catalog Last Checked: May 05, 2026 at 10:34 PM | Dataset Last Updated: September 26, 2024 at 04:31 PM
This layer depicts the conglomeration of the 4 layers used for TMDLs. It contains TMDL Subsheds, Direct Drain Overland (not piped), Direct Drain Sewersheds (piped), and Combined Sewer (CSS) Subsheds. This layer provided the granularity needed to facilitate further analysis.

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