Big Portage (W Bay Lake vs Long Lake
Water quality, depth, fish species, and recreation comparison.
Long Lake has a higher water quality grade (A, Excellent) than Big Portage (W Bay Lake (B, Good). Both are in Cass County, Minnesota.
B
Big Portage (W Bay Lake
Cass County, Minnesota
Moderate clarity, visible to about 7.5 ft.
A
Long Lake
Cass County, Minnesota
Crystal clear, you can see 21.8 ft down.
Side-by-Side Metrics
| Metric | Big Portage (W Bay Lake | Long Lake |
|---|---|---|
| Overall Grade | B (Good) | A (Excellent) |
| Water Clarity | 7.5 ft | 21.8 ft |
| Phosphorus | 20 µg/L | 9 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 23 ft | 115 ft |
| Surface Area | 902.34 acres | 1.0K acres |
| Public Access | Yes | Yes |
| Fish Species | 13 | 14 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Long Lake wins on overall water quality with a Grade A versus Big Portage (W Bay Lake's Grade B. Water clarity: 21.8 ft vs 7.5 ft. For fishing diversity, Long Lake also leads with 14 species.