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LakeQuality

Izaak Walton Lake vs Lamar City Lk. Nr. Dam Lake

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

Lamar City Lk. Nr. Dam Lake has a higher water quality grade (F, Very Poor) than Izaak Walton Lake (F, Very Poor). Both are in Wisconsin.

Both Izaak Walton Lake and Lamar City Lk. Nr. Dam Lake sit in Missouri. 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. These two are within a letter of each other on the rubric — Izaak Walton Lake (F) versus Lamar City Lk. Nr. Dam Lake (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.

F

Izaak Walton Lake

Vernon County, Wisconsin

Very murky, less than 1.5 ft of visibility.

F

Lamar City Lk. Nr. Dam Lake

Barton 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.

MetricIzaak Walton LakeLamar City Lk. Nr. Dam Lake
Overall GradeF (Very Poor)F (Very Poor)
Water Clarity1.5 ft2 ft
Phosphorus280 µg/L66 µg/L
Chlorophyll-a (Algae)123.1 µg/L39.1 µg/L
Maximum Depth--
Surface Area10 acres150 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statehypereutrophiceutrophic

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

Verdict

Lamar City Lk. Nr. Dam Lake wins on overall water quality with a Grade F versus Izaak Walton Lake's Grade F. Water clarity: 2 ft vs 1.5 ft. For fishing diversity, Lamar City Lk. Nr. Dam Lake also leads with 0 species.