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LakeQuality

Lake Iowa vs Lake Iowa Park Beach

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

Lake Iowa Park Beach has a higher water quality grade (D, Poor) than Lake Iowa (F, Very Poor). Both are in Iowa County, Wisconsin.

Both Lake Iowa and Lake Iowa Park Beach sit in Iowa. 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 — Lake Iowa (F) versus Lake Iowa Park Beach (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.

F

Lake Iowa

Iowa County, Wisconsin

Very murky, less than 1.9 ft of visibility.

D

Lake Iowa Park Beach

Iowa County, Wisconsin

Murky, only visible to about 3.4 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.

MetricLake IowaLake Iowa Park Beach
Overall GradeF (Very Poor)D (Poor)
Water Clarity1.9 ft3.4 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)53.8 µg/LNo data
Maximum Depth--
Surface Area92 acres92 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

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

Verdict

Lake Iowa Park Beach wins on overall water quality with a Grade D versus Lake Iowa's Grade F. Water clarity: 3.4 ft vs 1.9 ft. For fishing diversity, Lake Iowa Park Beach also leads with 0 species.