Every Boat Ramp on Triadelphia Reservoir

About Triadelphia Reservoir

Triadelphia Reservoir is an 800-acre impoundment on the Patuxent River, straddling the border of Howard and Montgomery counties in central Maryland. Built in 1943 as part of the Washington Suburban Sanitary Commission's water supply system, this intimate reservoir features a winding, narrow shape with numerous coves, points, and creek arms that create diverse fishing habitat. With a maximum depth of 70 feet and 14 miles of forested shoreline, Triadelphia offers a surprisingly wild fishing experience in the heart of the Baltimore-Washington corridor.

Largemouth bass are the cornerstone of Triadelphia's fishery, and the reservoir produces quality fish from its abundant laydowns, brush piles, and aquatic vegetation. Tiger musky are stocked by the Maryland DNR and provide an exciting trophy opportunity, with fish exceeding 35 inches taken each year by anglers casting large jerkbaits and swimbaits along the main channel. Crappie and bluegill are plentiful and provide reliable panfish action, especially during spring when they move into the shallow coves to spawn. Channel catfish inhabit the deeper channels and creek confluences, offering solid action on bottom rigs throughout the summer months.

Triadelphia Reservoir is managed with electric-motor-only regulations and requires a WSSC permit for access, which helps maintain low boating pressure and a peaceful atmosphere. The communities of Fulton and Dayton are nearby, though the reservoir's secluded setting along wooded Patuxent River valley makes it feel far removed from the surrounding suburban development. For central Maryland anglers seeking a quiet, productive fishery with a chance at a trophy tiger musky, Triadelphia Reservoir is an excellent choice.

Nearest towns: Fulton, Dayton