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Maryland
Patapsco Valley State Park
- Established
- 1907
- Acreage
- 16,043 · 16,043 acres along 32 mi of the Patapsco River; established 1907 as Patapsco State Forest Reserve; first 43 ac donated by Russell Sage Foundation director John Mark Glenn
- Location
- Baltimore, Howard, Carroll, and Anne Arundel counties, MD (greater Baltimore area)
- Key features
- 32 mi of the Patapsco River through eight developed recreation areas; 200+ mi of trails (70 mi maintained); two pedestrian swinging suspension bridges; historic mill towns of Avalon, Daniels and Orange Grove; site of the first common-carrier railroad in America (B&O)
- Activities
- Hiking, mountain biking, horseback riding, fishing, tubing, kayaking, camping, picnicking, history programs
- Notable
- Maryland's first state park (established 1907 as a state forest reserve); spans 32 miles of river through eight developed recreation areas and preserves the world's first underwater hydroelectric plant
Visits
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Source: dnr.maryland.gov · 2026-05-10