Public Works and Environmental Services

Fairfax County, Virginia

CONTACT INFORMATION: Our administrative offices are open to the public by appointment only at this time. Please call or email 8 a.m. – 4:30 p.m., Monday - Friday

703-324-5500
TTY 711

12000 Government Center Parkway
Suite 449, Fairfax, Va 22035

Craig Carinci,
Director, Stormwater Planning

Stream Physical Assessment Program

Taking samples in the streamThere are over 1,600 miles of streams and associated channels in Fairfax County and more than 1.1 million people. To support our large population, we have lots of infrastructure such as roads, houses, malls, libraries, and schools. As we develop our land, many of our streams have eroded or over-widened when too much stormwater runoff is sent to our streams quickly instead of soaking into the ground. As streams shift, our stormwater infrastructure (pipes that carry runoff from houses, shopping centers, and roads to our streams) may be damaged and need repair.

In order to assess the current condition of our streams and our stormwater infrastructure, staff from the Department of Public Works and Environmental Services will perform a visual stream physical assessment annually between November 15 and May 15. Only a portion of the county will be assessed per year. Please see the Stream Physical Assessment Map for the area of the county that is currently being assessed.

Results from the assessment will be used to:

  • identify candidate streams for restoration opportunities,
  • identify areas of stable stream for protection,
  • identify adjacent infrastructure needing maintenance,
  • identify small watersheds where stormwater infrastructure improvements/retrofits or other management actions could improve stream health, and
  • identify areas needing additional monitoring.

We expect the results to be uploaded annually each summer after the monitoring season has been completed.

For more information about the Stream Physical Assessment program, please contact the Stormwater Planning Division at 703-324-5500, TTY 771, or email us at watersheds@fairfaxcounty.gov.

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