L. Ste. Louise Lake vs Lake 37
Water quality, depth, fish species, and recreation comparison.
Lake 37 has a higher water quality grade (B, Good) than L. Ste. Louise Lake (D, Poor). Both are in St. Charles County, Wisconsin.
L. Ste. Louise Lake and Lake 37 are both in Missouri — 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 grades are meaningfully apart: Lake 37 grades a B while L. Ste. Louise Lake grades a D. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.
For a recreational visitor, the wider grade gap is decisive — Lake 37 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?
L. Ste. Louise Lake
Very murky, less than 2.6 ft of visibility.
Lake 37
Murky, only visible to about 4 ft.
Side-by-Side Metrics
| Metric | L. Ste. Louise Lake | Lake 37 |
|---|---|---|
| Overall Grade | D (Poor) | B (Good) |
| Water Clarity | 2.6 ft | 4 ft |
| Phosphorus | 40.8 µg/L | 16 µg/L |
| Chlorophyll-a (Algae) | 18.3 µg/L | 7.2 µg/L |
| Maximum Depth | - | - |
| Surface Area | 70 acres | 30 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Lake 37 wins on overall water quality with a Grade B versus L. Ste. Louise Lake's Grade D. Water clarity: 4 ft vs 2.6 ft. For fishing diversity, Lake 37 also leads with 0 species.