Lakes / Pennsylvania / Keystone Lake (State Park)
Keystone Lake (State Park), Pennsylvania
78 acres
Surface Area
About 25 ft
Max Depth (Approximate)
1,050 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Pennsylvania
40.37 degrees N, 79.38 degrees W - Westmoreland 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 - Keystone Lake (State Park)
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map. Max depth is approximate, from Pennsylvania DCNR state park bathymetry.
How Keystone Lake (State Park) Stacks Up
- About 33 miles from Pittsburgh, as the crow flies.
- 17 fish species on the Fish and Boat Commission list for this lake.
Fish Species
MuskellungeTiger MuskellungeLargemouth BassBlack CrappieWhite CrappieYellow PerchBluegillBrown TroutRainbow TroutBrook TroutPumpkinseedBrown BullheadGizzard ShadGolden ShinerGreen SunfishWhite SuckerYellow Bullhead
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID402228792328
CountyWestmoreland
Fishing IncludesTiger Muskellunge, Largemouth Bass, Black Crappie, White Crappie, Yellow Perch, Bluegill, Pumpkinseed
Stocked TroutYes - stocked by the Pennsylvania Fish and Boat Commission
Coordinates40.3736, -79.3841
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 402228792328); USGS; Pennsylvania Department of Conservation and Natural Resources, State Park Lakes Bathymetry; Pennsylvania Fish and Boat Commission, WWCW Fisheries Lakes (PASDA PAFishBoat layer 27); Pennsylvania Fish and Boat Commission, Stocked Trout Waterbodies (PASDA PAFishBoat layers 1-2). Verified October 28, 2026.