Rush Lake vs West Leaf Lake
Water quality, depth, fish species, and recreation comparison.
West Leaf Lake has a higher water quality grade (A, Excellent) than Rush Lake (C, Fair). Both are in Otter Tail County, Minnesota.
Both Rush Lake and West Leaf 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. West Leaf Lake (A) is materially cleaner than Rush Lake (C). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.
For a recreational visitor, the wider grade gap is decisive — West Leaf 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?
Rush Lake
Moderate clarity, visible to about 7.5 ft.
West Leaf Lake
Moderate clarity, visible to about 7.5 ft.
Side-by-Side Metrics
| Metric | Rush Lake | West Leaf Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 7.5 ft | 7.5 ft |
| Phosphorus | 27 µg/L | 22 µg/L |
| Chlorophyll-a (Algae) | 9.8 µg/L | 6.2 µg/L |
| Maximum Depth | 68 ft | 55 ft |
| Surface Area | 5,276 acres | 700 acres |
| Public Access | Yes | Yes |
| Fish Species | 19 | 18 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
West Leaf Lake wins on overall water quality with a Grade A versus Rush Lake's Grade C. Water clarity: 7.5 ft vs 7.5 ft. For more fish-species variety, Rush Lake edges ahead with 19 documented species.
Source: EPA National Aquatic Resource Surveys, 2026.