Aaron Lake vs Chippewa Lake
Water quality, depth, fish species, and recreation comparison.
Chippewa Lake has a higher water quality grade (A, Excellent) than Aaron Lake (C, Fair). Both are in Douglas County, Minnesota.
Both Aaron Lake and Chippewa 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: Chippewa Lake grades a A while Aaron 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 — Chippewa 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?
Aaron Lake
Moderate clarity, visible to about 7 ft.
Chippewa Lake
Crystal clear, you can see 15.1 ft down.
Side-by-Side Metrics
| Metric | Aaron Lake | Chippewa Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 7 ft | 15.1 ft |
| Phosphorus | No data | 14 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 16 ft | 95 ft |
| Surface Area | 610.3 acres | 1.2K acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | mesotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Chippewa Lake wins on overall water quality with a Grade A versus Aaron Lake's Grade C. Water clarity: 15.1 ft vs 7 ft. For fishing diversity, Chippewa Lake also leads with 1 species.