Alvin Lake vs Darling Lake
Water quality, depth, fish species, and recreation comparison.
Darling Lake has a higher water quality grade (A, Excellent) than Alvin Lake (B, Good). Both are in Douglas County, Minnesota.
Both Alvin Lake and Darling 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 — Alvin Lake (B) versus Darling 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.
Alvin Lake
Good clarity, visible to about 10.5 ft.
Darling Lake
Good clarity, visible to about 14.7 ft.
Side-by-Side Metrics
| Metric | Alvin Lake | Darling Lake |
|---|---|---|
| Overall Grade | B (Good) | A (Excellent) |
| Water Clarity | 10.5 ft | 14.7 ft |
| Phosphorus | No data | 19.5 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 163 ft | 62 ft |
| Surface Area | 2.6K acres | 1.0K acres |
| Public Access | Yes | No |
| 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
Darling Lake wins on overall water quality with a Grade A versus Alvin Lake's Grade B. Water clarity: 14.7 ft vs 10.5 ft. For fishing diversity, Darling Lake also leads with 1 species.