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 one mile upstream of the Route 9 and Route 287 intersection between Purcellville and Wheatland. Loudoun Wildlife selected this site (and another site located approximately two thirds of a mile downstream 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, Upstream starting Fall 2021. This site received acceptable ratings until the unacceptable rating in Fall 2022. These surveys cannot detect bacterial pollution.