L. Ste. Louise Lake vs Lake St. Louis by Dam
Water quality, depth, fish species, and recreation comparison.
L. Ste. Louise Lake has a higher water quality grade (D, Poor) than Lake St. Louis by Dam (F, Very Poor). Both are in St. Charles County, Wisconsin.
L. Ste. Louise Lake and Lake St. Louis by Dam 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. These two are within a letter of each other on the rubric — L. Ste. Louise Lake (D) versus Lake St. Louis by Dam (F). 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.
L. Ste. Louise Lake
Very murky, less than 3.2 ft of visibility.
Lake St. Louis by Dam
Very murky, less than 2.3 ft of visibility.
Side-by-Side Metrics
| Metric | L. Ste. Louise Lake | Lake St. Louis by Dam |
|---|---|---|
| Overall Grade | D (Poor) | F (Very Poor) |
| Water Clarity | 3.2 ft | 2.3 ft |
| Phosphorus | 33.5 µg/L | 74.8 µg/L |
| Chlorophyll-a (Algae) | 17.2 µg/L | 32.2 µg/L |
| Maximum Depth | - | - |
| Surface Area | 70 acres | 563 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
L. Ste. Louise Lake wins on overall water quality with a Grade D versus Lake St. Louis by Dam's Grade F. Water clarity: 3.2 ft vs 2.3 ft. For fishing diversity, L. Ste. Louise Lake also leads with 0 species.