Mesotrophic Lakes in Pennsylvania
11 mesotrophic lakes in Pennsylvania. Moderate nutrients, good water quality.
Most well-managed working lakes register as mesotrophic — the band that balances productivity with clarity. 11 lakes in Pennsylvania sit in the mesotrophic band. About 9% are deep (50+ ft); the rest are shallower basins where watershed management keeps nutrients from pushing the system into eutrophy.
Mesotrophic lakes sit in the middle of the phosphorus and chlorophyll-a range: productive but still clear, with readings that rarely reach the EPA's poorest condition class.
| # | Lake | County | Clarity | Depth | TSI |
|---|---|---|---|---|---|
| 1 | Belmont Lake | Wayne | - | - | - |
| 2 | Mountain Mud Pond | Lackawanna | - | - | - |
| 3 | Lake Marburg | York | - | 111.5 ft | - |
| 4 | Long Pine Run Reservoir | Adams | - | - | - |
| 5 | Duck Harbor Pond | Wayne | - | - | - |
| 6 | Little Buffalo Lake | Perry | - | 35 ft | - |
| 7 | Canoe Creek Lake | Blair | - | 27 ft | - |
| 8 | Laurel Hill Lake | Somerset | - | - | - |
| 9 | North Park Lake | Allegheny | - | - | - |
| 10 | Lower Lake | Pike | - | - | - |
| 11 | Comfort Lake | Susquehanna | - | - | - |
All mesotrophic lakes →Minnesota version →Wisconsin version →Illinois version →Michigan version →Iowa version →Ohio version →New York version →Missouri version →Indiana version →North Dakota version →South Dakota version →Florida version →Colorado version →North Carolina version →Vermont version →Texas version →Oregon version →Arkansas version →Oklahoma version →Kansas version →Nebraska version →Nevada version →Arizona version →Idaho version →Montana version →New Mexico version →Tennessee version →Alabama version →Virginia version →Kentucky version →Utah version →Washington version →Wyoming version →Georgia version →Massachusetts version →Ontario version →Québec version →Nova Scotia version →British Columbia version →Newfoundland and Labrador version →All Pennsylvania lakes →
Source: EPA National Aquatic Resource Surveys, 2026.