Big Lake vs Pike Lake
Water quality, depth, fish species, and recreation comparison.
Pike Lake has a higher water quality grade (A, Excellent) than Big Lake (B, Good). Both are in St. Louis County, Minnesota.
Both Big Lake and Pike 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 — Big Lake (B) versus Pike 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.
Big Lake
Moderate clarity, visible to about 8.2 ft.
Pike Lake
Crystal clear, you can see 18 ft down.
Side-by-Side Metrics
| Metric | Big Lake | Pike Lake |
|---|---|---|
| Overall Grade | B (Good) | A (Excellent) |
| Water Clarity | 8.2 ft | 18 ft |
| Phosphorus | 14 µg/L | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 22 ft | 60 ft |
| Surface Area | 1.9K acres | 488.26 acres |
| Public Access | Yes | Yes |
| Fish Species | 8 | 9 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Pike Lake wins on overall water quality with a Grade A versus Big Lake's Grade B. Water clarity: 18 ft vs 8.2 ft. For fishing diversity, Pike Lake also leads with 9 species.