Lac la Croix Lake vs Pike Lake
Water quality, depth, fish species, and recreation comparison.
Pike Lake has a higher water quality grade (A, Excellent) than Lac la Croix Lake (C, Fair). Both are in St. Louis County, Minnesota.
Both Lac la Croix 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. Pike Lake (A) is materially cleaner than Lac la Croix Lake (C). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.
For a recreational visitor, the wider grade gap is decisive — Pike Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Lac la Croix Lake
Moderate clarity, visible to about 8.6 ft.
Pike Lake
Crystal clear, you can see 18 ft down.
Side-by-Side Metrics
| Metric | Lac la Croix Lake | Pike Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 8.6 ft | 18 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 168 ft | 60 ft |
| Surface Area | 29.6K acres | 488.26 acres |
| Public Access | No | Yes |
| Fish Species | 1 | 1 |
| 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 Lac la Croix Lake's Grade C. Water clarity: 18 ft vs 8.6 ft. For fishing diversity, Pike Lake also leads with 1 species.