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Storm Drain Marker Installations

Published by City of Washington, DC | District of Columbia | Metadata Last Checked: February 12, 2026 | Last Modified: 2026-02-05T07:30:26.000Z
Storm Drain Marker Installations is a data layer showing where storm drain markers were installed on storm sewer catchments. Markers indicate that the sewer catchments drain to the Chesapeake Bay watershed and to report pollution to DC's 311 service line. Markers are installed by DOEE and volunteer groups. This dataset should not be considered as a complete capture of all DC storm drains. There are some storm drains that are knowingly not included within this layer. Catchbasin ID refers to DC Water's ID for each storm drain.

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