East Battle Lake vs Mason Lake
Water quality, depth, fish species, and recreation comparison.
East Battle Lake has a higher water quality grade (A, Excellent) than Mason Lake (C, Fair). Both are in Otter Tail County, Minnesota.
Both East Battle Lake and Mason Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. The grades are meaningfully apart: East Battle Lake grades a A while Mason Lake grades a C. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.
For a recreational visitor, the wider grade gap is decisive — East Battle Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
East Battle Lake
Good clarity, visible to about 13.1 ft.
Mason Lake
Very murky, less than 3 ft of visibility.
Side-by-Side Metrics
| Metric | East Battle Lake | Mason Lake |
|---|---|---|
| Overall Grade | A (Excellent) | C (Fair) |
| Water Clarity | 13.1 ft | 3 ft |
| Phosphorus | 12 µg/L | 21 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 87 ft | 108 ft |
| Surface Area | 2.0K acres | 5.6K acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
East Battle Lake wins on overall water quality with a Grade A versus Mason Lake's Grade C. Water clarity: 13.1 ft vs 3 ft. For fishing diversity, East Battle Lake also leads with 1 species.