Lakes / Pennsylvania / Allegheny Reservoir
Allegheny Reservoir, Pennsylvania
12,081 acres
Surface Area
128 ft
Max Depth
1,329 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Pennsylvania
41.90 degrees N, 78.94 degrees W - Warren 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 - Allegheny Reservoir
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Allegheny Reservoir Stacks Up
- Ranks #2 for surface area among the Pennsylvania lakes counted so far - 12,081 acres.
- The largest lake in Warren County among those counted.
- About 61 miles from Erie, as the crow flies.
Facts and Figures
Waterbody ID415024790012
CountyWarren
Fishing IncludesWalleye, Muskellunge, Tiger Muskellunge, Northern Pike, Smallmouth Bass, Channel Catfish, Black Crappie, White Crappie, Yellow Perch, Rock Bass, White Bass
Coordinates41.8957, -78.9411
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 415024790012); USGS; US Army Corps of Engineers; Pennsylvania Fish and Boat Commission, WWCW Fisheries Lakes (PASDA PAFishBoat layer 27). Verified October 28, 2026.