Big Deep Lake vs Long Lake
Water quality, depth, fish species, and recreation comparison.
Big Deep Lake and Long Lake both received the same overall water quality grade of A (Excellent). Both are in Cass County, Minnesota.
A
Big Deep Lake
Cass County, Minnesota
Crystal clear, you can see 17.1 ft down.
A
Long Lake
Cass County, Minnesota
Crystal clear, you can see 21.8 ft down.
Side-by-Side Metrics
| Metric | Big Deep Lake | Long Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 17.1 ft | 21.8 ft |
| Phosphorus | 6.5 µg/L | 9 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 107 ft | 115 ft |
| Surface Area | 535.75 acres | 1.0K acres |
| Public Access | No | Yes |
| Fish Species | 13 | 14 |
| Trophic State | oligotrophic | 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 (Big Deep Lake: 17.1 ft, Long Lake: 21.8 ft) and what you want from the lake. Big Deep Lake has fewer fish species than Long Lake.