Ml-Seventeen Lake vs Round Lake
Water quality, depth, fish species, and recreation comparison.
Ml-Seventeen Lake and Round Lake both received the same overall water quality grade of A (Excellent). Both are in Aitkin County, Minnesota.
Both Ml-Seventeen Lake and Round 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. These two are within a letter of each other on the rubric — Ml-Seventeen Lake (A) versus Round Lake (A). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.
Ml-Seventeen Lake
Murky, only visible to about 6.2 ft.
Round Lake
Good clarity, visible to about 14.5 ft.
Side-by-Side Metrics
| Metric | Ml-Seventeen Lake | Round Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 6.2 ft | 14.5 ft |
| Phosphorus | 24 µg/L | 10 µg/L |
| Chlorophyll-a (Algae) | 5.3 µg/L | 2.7 µg/L |
| Maximum Depth | 42 ft | 125 ft |
| Surface Area | 128,250 acres | 737 acres |
| Public Access | Yes | Yes |
| Fish Species | 21 | 18 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade A. The tiebreakers come down to clarity (Ml-Seventeen Lake: 6.2 ft, Round Lake: 14.5 ft) and what you want from the lake. Ml-Seventeen Lake supports more documented fish species.
Source: EPA National Aquatic Resource Surveys, 2026.