Mesotrophic Lakes in Arkansas
8 mesotrophic lakes in Arkansas. Moderate nutrients, good water quality.
Mesotrophic lakes are the productive middle of the trophic scale — TSI between 40 and 50. Clear enough to be inviting, productive enough to support a strong fishery, with moderate phosphorus and a modest algal community that does not dominate the optical signal. 8 lakes in Arkansas 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 | Greers Ferry Lake | Cleburne | A | 10 ft | - | 42 |
| 2 | Lake Winona | Saline | A | 7.2 ft | - | 42 |
| 3 | Lake Mirandy | Sharp | A | - | - | 46 |
| 4 | Norfork Lake | Baxter | C | 12.2 ft | - | 46 |
| 5 | Lake Fort Smith | Crawford | C | 6.5 ft | - | 48 |
| 6 | Lake Ouachita | Garland | C | 15 ft | - | 43 |
| 7 | Crown Lake | Izard | C | - | - | 43 |
| 8 | Lake Leatherwood | Carroll | C | - | - | 46 |
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 →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 Arkansas lakes →
Source: EPA National Aquatic Resource Surveys, 2026.