In 2021-2022, we conducted testing at the Broad Run in Willowsford, the Goose Creek site near Lansdowne, four sites along the Tuscarora in the Leesburg area, two sites along Town Branch in Leesburg, Beaverdam Run in Ashburn, two sites along the South Fork of the Catoctin in Purcellville, an unnamed tributary in Round Hill, and Sycolin Creek off of Evergreen Mills Road.

In 2022-2023, we plan to continue monitoring at these sites and expand our sites in the Leesburg area to include additional locations on Town Branch, Tuscarora, Cattail Branch, and Sycolin Creek.