Clopper Lake is a 90-acre reservoir at the heart of the Clopper Day-Use Area in Seneca Creek State Park, west of Gaithersburg, Maryland. Surrounded by forests, fields, and miles of trails, the lake serves as one of the park's central recreation hubs, offering picnicking, boat rentals, fishing, and access to scenic routes that follow the shoreline and nearby woodlands. Created as part of the historic Woodlands Estate, the lake anchors the northern end of the Seneca Creek valley, where visitors can explore restored 19th?century features, interpretive paths, and connections to the broader trail network that leads south toward the Potomac River. - AsNotedIn