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LakeQuality

Smithville Lake vs Smithville Lake

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

Smithville Lake and Smithville Lake both received the same overall water quality grade of D (Poor). Both are in Clay County, Wisconsin.

Smithville Lake and Smithville 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 — Smithville Lake (D) versus Smithville Lake (D). 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.

D

Smithville Lake

Clay County, Wisconsin

Very murky, less than 2.6 ft of visibility.

D

Smithville Lake

Clay County, Wisconsin

Very murky, less than 2 ft of visibility.

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.

MetricSmithville LakeSmithville Lake
Overall GradeD (Poor)D (Poor)
Water Clarity2.6 ft2 ft
Phosphorus34 µg/L48.8 µg/L
Chlorophyll-a (Algae)27.6 µg/L27.2 µg/L
Maximum Depth--
Surface Area7.2K acres7.2K acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

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

Verdict

Both lakes earn the same Grade D. The tiebreakers come down to clarity (Smithville Lake: 2.6 ft, Smithville Lake: 2 ft) and what you want from the lake. Smithville Lake matches its peer on species count.