Cleanest Lakes in Hill County, Montana
McKinnsey Reservoir in Hill County leads the rankings with a water quality grade of NR. Below are the top 25 cleanest monitored lakes in Hill County, Montana, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | McKinnsey Reservoir | Hill | NR | - | - | - |
| 2 | Burkhartsmeyer Reservoir | Hill | NR | - | - | - |
| 3 | Hingham Lake | Hill | NR | - | - | - |
| 4 | Lower Lake | Hill | NR | - | - | - |
| 5 | Bearpaw Lake | Hill | NR | - | - | - |
| 6 | Bailey Reservoir | Hill | NR | - | - | - |
| 7 | Sage Lake | Hill | NR | - | - | - |
| 8 | Dry Lake | Hill | NR | - | - | - |
| 9 | Chain of Lakes | Hill | NR | - | - | - |
| 10 | Chain of Lakes | Hill | NR | - | - | - |
| 11 | Fresno Reservoir | Hill | NR | - | - | - |
| 12 | Sands Lake | Hill | NR | - | - | - |
| 13 | Halfway Lake | Hill | NR | - | - | - |
| 14 | Martin Lake | Hill | NR | - | - | - |
| 15 | Dry Lake | Hill | NR | - | - | - |
| 16 | Grassy Lake | Hill | NR | - | - | - |
| 17 | Lake Thibadeau | Hill | NR | - | - | - |
| 18 | Diversion | Hill | NR | - | - | - |
| 19 | Mud Lake | Hill | NR | - | - | - |
| 20 | Mud Lake | Hill | NR | - | - | - |
| 21 | Mud Lake | Hill | NR | - | - | - |
| 22 | Mud Lake | Hill | NR | - | - | - |
| 23 | Mud Lake | Hill | NR | - | - | - |
| 24 | Grassy Lake | Hill | NR | - | - | - |
| 25 | Grassy Lake | Hill | NR | - | - | - |
More Answers for Hill County, Montana
Get Hill County, Montana water-quality updates
New grades and algae readings can change this ranking. Unsubscribe anytime.