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Floodplains, RPAs, wetlands and stormwater in Washington, DC

DC has no Virginia-style Resource Protection Areas. What it does regulate is soil disturbance (any work disturbing more than 50 sq ft needs an erosion and sediment control plan), stormwater for large projects, floodplains and wetlands.

A person last checked these rules on October 20, 2026. This is guidance only, so confirm with Washington before you build.

The details

  • Erosion and sediment control plan for more than 50 sq ft of disturbance. Projects disturbing 5,000 sq ft or more also face stormwater management and GAR review.High confidence
  • In a FEMA flood zone, DOEE reviews the permit for floodplain compliance.High confidence
  • Mapped wetlands and streams are shown on DC's GIS. Filling one can need a federal Section 404 permit.Medium confidence

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SetbackIQ reads the zoning, flood zone, historic district, and environmental maps for your lot. Then it applies these rules.

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Common questions

What if my lot is in a floodplain, Resource Protection Area or wetland in Washington?
DC has no Virginia-style Resource Protection Areas. What it does regulate is soil disturbance (any work disturbing more than 50 sq ft needs an erosion and sediment control plan), stormwater for large projects, floodplains and wetlands.

Sources

  1. DC Department of Energy and Environment, Erosion and Sediment Control. Checked 2026-10-21
    An ESC plan is required for building construction and redevelopment projects that disturb or move more than 50 square feet of land... [The minor track covers projects that disturb] less than 5,000 square feet of land [and don't require stormwater management…
  2. 44 CFR 60.3, floodplain management criteria. Checked 2026-10-19
    Require permits for all proposed construction or other development in the community...
  3. US EPA, Clean Water Act Section 404 permit program. Checked 2026-10-21
    Section 404 requires a permit before dredged or fill material may be discharged into waters of the United States, unless the activity is exempt.

Disclaimer: This is general information, not legal or professional advice for any one property. Codes change. SetbackIQ is not a zoning determination, a permit, or a survey, and it does not replace an architect, engineer, or lawyer. Confirm with your building and zoning offices before you build, buy, or sign a contract.