Big Fish Lake vs Big Spunk Lake
Water quality, depth, fish species, and recreation comparison.
Big Fish Lake reads lower on nutrients and algae than Big Spunk Lake. Both are in Stearns County, Minnesota.
Big Fish Lake and Big Spunk Lake are both in Minnesota — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The readings are close: Big Fish Lake and Big Spunk Lake sit within a narrow band of each other on phosphorus, chlorophyll-a and clarity. The per-parameter table below shows where the small differences actually live.
With readings 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.
Big Fish Lake
Crystal clear, you can see 20 ft down.
Big Spunk Lake
Good clarity, visible to about 10 ft.
Side-by-Side Metrics
| Metric | Big Fish Lake | Big Spunk Lake |
|---|---|---|
| Water Clarity | 20 ft Better | 10 ft |
| Phosphorus | 9 µg/L Better | 14 µg/L |
| Chlorophyll-a (Algae) | 1.8 µg/L Better | 3.7 µg/L |
| Maximum Depth | 70 ft Better | 38 ft |
| Surface Area | 557 acres | 415 acres |
| Public Access | Yes | Yes |
| Fish Species | 15 | 19 Better |
| Trophic State | oligotrophic | mesotrophic |
A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.
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Verdict
Big Fish Lake and Big Spunk Lake read the same on nutrients and algae overall. The tiebreakers come down to clarity (Big Fish Lake: 20 ft, Big Spunk Lake: 10 ft) and what you want from the lake. Big Fish Lake has fewer fish species than Big Spunk Lake.
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Where to stay near Big Fish Lake and Big Spunk Lake
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Source: EPA National Aquatic Resource Surveys, 2026.