Hypereutrophic Lakes in Arkansas
25 hypereutrophic lakes in Arkansas. Very high nutrients, dense algae, poor clarity.
Hypereutrophic lakes (TSI above 70) are at the upper end of the productivity scale: visible algal blooms most weeks of summer, clarity often under 3 feet, and meaningful risk of harmful-algal-bloom toxin events. 25 hypereutrophic lakes are on the Arkansas books. Almost none of them are deep — 0% break 50 feet. Shallow basin plus heavy nutrient input is the consistent recipe.
Hypereutrophic lakes overwhelmingly grade D or F — the trophic class and the grade are measuring closely-related dimensions of the same underlying nutrient regime.
| # | Lake | County | Grade | Clarity | Depth | TSI |
|---|---|---|---|---|---|---|
| 1 | Lake Beulah | Desha | F | 1 ft | - | 79 |
| 2 | Desoto Lake | Phillips | F | 1.6 ft | - | 68 |
| 3 | Tunica Cutoff Lake | Lee | F | 1.6 ft | - | 72 |
| 4 | Siloam Springs Lake | Benton | F | - | - | 65 |
| 5 | Lincoln Lake | Washington | F | - | - | 64 |
| 6 | Lake Charles | Lawrence | F | - | - | 66 |
| 7 | Lake Wilson | Ashley | F | - | - | 75 |
| 8 | Lake Atkins | Pope | F | - | - | 67 |
| 9 | Lake Erling | Lafayette | F | - | - | 65 |
| 10 | Lower Lake Chicot | Chicot | F | - | - | 74 |
| 11 | Overcup Lake | Conway | F | - | - | 66 |
| 12 | Harris Break Lake | Perry | F | - | - | 61 |
| 13 | Lake Conway | Faulkner | F | - | - | 71 |
| 14 | Lake Jack Nolan | Sebastian | F | - | - | 60 |
| 15 | Horseshoe Lake | Crittenden | F | - | - | 70 |
| 16 | Bois D Arc Lake | Hempstead | F | - | - | 80 |
| 17 | Lake June | Lafayette | F | - | - | 77 |
| 18 | Lake Hogue | Poinsett | F | - | - | 79 |
| 19 | Grand Lake | Chicot | F | - | - | 82 |
| 20 | Lake Pine Bluff Diagonally From North And East Levees | Jefferson | F | - | - | 75 |
| 21 | Bear Creek Lake | Lee | F | - | - | 65 |
| 22 | Lake Wallace | Chicot | F | - | - | 75 |
| 23 | Crystal Lake | Benton | F | - | - | 61 |
| 24 | Tri County Lake | Calhoun | F | - | - | 66 |
| 25 | Storm Creek Lake | Phillips | F | - | - | 62 |
All hypereutrophic 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.