Gull Lake vs Three Island Lake
Water quality, depth, fish species, and recreation comparison.
Three Island Lake has a higher water quality grade (A, Excellent) than Gull Lake (C, Fair). Both are in Beltrami County, Minnesota.
C
Gull Lake
Beltrami County, Minnesota
Murky, only visible to about 5.9 ft.
A
Three Island Lake
Beltrami County, Minnesota
Good clarity, visible to about 12 ft.
Side-by-Side Metrics
| Metric | Gull Lake | Three Island Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 5.9 ft | 12 ft |
| Phosphorus | 27 µg/L | 17 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 23 ft | 25 ft |
| Surface Area | 2.3K acres | 729.49 acres |
| Public Access | Yes | Yes |
| Fish Species | 13 | 17 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Three Island Lake wins on overall water quality with a Grade A versus Gull Lake's Grade C. Water clarity: 12 ft vs 5.9 ft. For fishing diversity, Three Island Lake also leads with 17 species.