15. N Fork Catoctin Creek, Downstream
Site Description: The North Fork of the Catoctin Creek feeds into Catoctin Creek, which is a tributary of the Potomac River. This site is located approximately two thirds of a mile downstream of the Route 9 and Route 287 intersection between Purcellville and Wheatland. Loudoun Wildlife selected this site (and another site located approximately one mile upstream of the intersection) to monitor changes in water quality before, during, and after a roundabout project that is scheduled for construction at this intersection.
Certified Lead Monitor: Amy Ulland started conducting benthic macroinvertebrate monitoring at this site in the fall of 2021.

Ecological condition rating scores resulting from benthic macroinvertebrate surveys at N Fork Catoctin Creek, Downstream starting Fall 2021. This site has continuously received acceptable ratings. These surveys cannot detect bacterial pollution.
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