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LakeQuality

Little Prairie Lake by Dam vs Peaceful Valley Lake

Water quality, depth, fish species, and recreation comparison.

Little Prairie Lake by Dam has a higher water quality grade (C, Fair) than Peaceful Valley Lake (C, Fair). Both are in Wisconsin.

Little Prairie Lake by Dam and Peaceful Valley Lake 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 — Little Prairie Lake by Dam (C) versus Peaceful Valley Lake (C). 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.

C

Little Prairie Lake by Dam

Phelps County, Wisconsin

Murky, only visible to about 4.9 ft.

C

Peaceful Valley Lake

Gasconade County, Wisconsin

Murky, only visible to about 3.8 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricLittle Prairie Lake by DamPeaceful Valley Lake
Overall GradeC (Fair)C (Fair)
Water Clarity4.9 ft3.8 ft
Phosphorus24.5 µg/L24.5 µg/L
Chlorophyll-a (Algae)6.3 µg/L12.7 µg/L
Maximum Depth--
Surface Area100 acres164 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Little Prairie Lake by Dam wins on overall water quality with a Grade C versus Peaceful Valley Lake's Grade C. Water clarity: 4.9 ft vs 3.8 ft. For fishing diversity, Little Prairie Lake by Dam also leads with 0 species.