Stormwater Management

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The Department of Public Works is responsible for the maintenance and repair of the stormwater drainage system within the town. The town's storm drainage systems goes directly into our streams and drains into the Potomac River. The Potomac River is an important drinking water supply and drains into the Chesapeake Bay.

What is Stormwater?

Stormwater is caused by rain or snow melt. Excess stormwater that cannot infiltrate into the soil or be absorbed by vegetation washes pollutants like soil, litter, fertilizers, automotive fluids, detergents, and bacteria into our creeks, rivers, lakes and oceans. In heavy storms, stormwater can cause flooding and drainage problems. Stormwater runoff is a leading source of water pollution.

We want your input!

In development of a final action plan, the Town of Herndon is soliciting public input on its draft Chesapeake Bay Total Maximum Daily Load (TMDL) Action Plan.  Comments will be received beginning October 10 – October 25, 2019 by email: or mail comments to:  Department of Public Works, Attn:  TMDL Action Plan, 777 Lynn Street, Herndon, VA  20170. 

The Chesapeake Bay TMDL Action Plan documents how the Town of Herndon intends to meet the “Special Condition for the Chesapeake Bay TMDL” in Section I, Part C of the Town’s General Permit for Discharges from Small Municipal Separate Storm Sewer Systems (MS4s). 

For more information please contact the Department of Public Works at  or call (703) 435-6853. 


  • Stormwater Management

    • FEMA Flood Risk Study

    • Herndon's MS4 Plan to Reduce Stormwater Pollution

    • Land Disturbing Activities

    • Requirements for Contractors

    • Tips for Businesses

    • Tips for Homeowners

    • Tips for Pet Owners

    • Volunteer Opportunities