Mesotrophic Lakes in Nebraska
8 mesotrophic lakes in Nebraska. Moderate nutrients, good water quality.
Most well-managed working lakes register as mesotrophic — the band that balances productivity with clarity. 8 lakes in Nebraska sit in the mesotrophic band. About 0% are deep (50+ ft); the rest are shallower basins where watershed management keeps nutrients from pushing the system into eutrophy.
Mesotrophic lakes tend to grade B or C on our A–F scale — the productive-but-clear band lines up with the middle of the letter grades.
| # | Lake | County | Grade | Clarity | Depth | TSI |
|---|---|---|---|---|---|---|
| 1 | Lake C W Mcconaughy | Keith | A | 7.2 ft | - | 54 |
| 2 | Sherman Reservoir | Sherman | A | 2.4 ft | - | 60 |
| 3 | Davis Creek Reservoir | Greeley | A | 3.9 ft | - | 51 |
| 4 | Lake Carter P Johnson | Sioux | A | 8.3 ft | - | 45 |
| 5 | Lake Minatare | Scotts Bluff | A | 5.5 ft | - | 51 |
| 6 | Hershey Lake | Lincoln | A | 13.6 ft | - | 46 |
| 7 | Hugh Butler Lake | Frontier | A | 2.8 ft | - | 59 |
| 8 | Box Butte Reservoir | Dawes | C | 5.6 ft | - | 53 |
All mesotrophic lakes →Minnesota version →Wisconsin version →Illinois version →Michigan version →Iowa version →Ohio version →Pennsylvania 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 →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 Nebraska lakes →
Source: EPA National Aquatic Resource Surveys, 2026.