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Seneca Creek State Park

Seneca Creek State Park protects a long corridor through Montgomery County, with woodland trails and recreation around Clopper Lake near Gaithersburg.

Seneca Creek State Park

The lake setting provides a convenient starting point for a walk or other permitted outdoor activity.

Choose an entrance and route using the state’s current map, since the park extends well beyond the lake area. Check boating, fishing and day-use requirements separately. The photograph shows autumn reflections on Clopper Lake, whose appearance changes by season. Follow current trail notices and allow for weather or maintenance closures before setting out.

Visitor details reviewed October 18, 2026. Check official visitor information for current access, admission, and operating arrangements. View on OpenStreetMap.

Image credit: Eileen McVey, NESDIS, NOAA Central Library / Wikimedia Commons. Original source. Public domain. Resized and converted to WebP; may be cropped for display.