Lakes / Pennsylvania / Blue Marsh Reservoir
Blue Marsh Reservoir, Pennsylvania
1,150 acres
Surface Area
52 ft
Max Depth
322 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Pennsylvania
40.39 degrees N, 76.06 degrees W - Berks County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Pennsylvania Fish and Boat Commission coordinates, not by eye. Schematic - not a survey map.
Depth Profile - Blue Marsh Reservoir
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Blue Marsh Reservoir Stacks Up
- The largest lake in Berks County among those counted.
- About 44 miles from Harrisburg, as the crow flies.
- 19 fish species on the Fish and Boat Commission list for this lake.
Fish Species
WalleyeMuskellungeTiger MuskellungeStriped BassLargemouth BassChannel CatfishFlathead CatfishBlack CrappieWhite CrappieYellow PerchBluegillBrown TroutRainbow TroutPumpkinseedAlewifeCommon CarpGolden ShinerGreen SunfishWhite Sucker
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID402244760152
CountyBerks
Fishing IncludesWalleye, Tiger Muskellunge, Striped Bass Hybrid, Smallmouth Bass, Largemouth Bass, Channel Catfish, Black Crappie, White Crappie, Yellow Perch, Bluegill
Coordinates40.3941, -76.0642
Deepest Natural Lakes in Pennsylvania
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Struble Lake | Chester | 146 acres | 19 ft |
Largest Lakes in Pennsylvania
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Pymatuning Reservoir | Crawford | 13,920 acres | About 25 ft |
| 2 | Allegheny Reservoir | Warren | 12,081 acres | 128 ft |
| 3 | Raystown Lake | Huntingdon | 8,297 acres | None |
| 4 | Lake Wallenpaupack | Pike, Wayne | 5,698 acres | 60 ft |
| 5 | Shenango River Lake | Mercer | 3,559 acres | 30 ft |
Sources: Pennsylvania Fish and Boat Commission lake data (ID 402244760152); USGS; US Army Corps of Engineers; Pennsylvania Fish and Boat Commission, WWCW Fisheries Lakes (PASDA PAFishBoat layer 27). Verified October 28, 2026.