Go To Search
Click to Home
Site Tools
The condition, or health, of our streams is important to everyone, as well as the wildlife and aquatic community that live in or nearby the streams. Stream conditions are evaluated through assessments of the environmental conditions by monitoring the types of organisms living in the stream; chemical and biological quality of the stream water; and stream habitat and ecological conditions. Assessments are designed to evaluate stream conditions relative to a designated water use type (for example, swimming or eating fish that you catch). If a section of a stream does not meet the water use criteria, the state of Virginia designates the section to be included in the list of impaired streams indicating that the pollutants are too great. The stream is then “listed” by EPA per section 303(d) of the 1972 Clean Water Act.

Find Out More About the Stream Conditions Near You
You can learn about stream conditions and find out answers to questions such as:
  • Is the stream water in my area healthy enough to play and swim in?
  • What does the stream look like?
  • Should I eat the fish that I catch in local streams and ponds?

To find answers to these questions and more, click here or on the image below. It will take you to an interactive map where you can enter your street address and explore the stream conditions where you live. If symbols on the map indicate that stream monitoring was done nearby, click on the symbols to view photos and download the complete report.

link to stream assessment map

Click the image above to launch an online map.

Large Static Map
View two large format maps from the Loudoun County Office of Mapping and Geographic Information (OMAGI) for the benthic and habitat stream assessment results:

Loudoun On
Site Tools