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LakeQuality

Lake Belva Deer vs Lake Darling Max Depth

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

Lake Belva Deer and Lake Darling Max Depth both received the same overall water quality grade of F (Very Poor). Both are in Wisconsin.

Both Lake Belva Deer and Lake Darling Max Depth 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. The grades are close: Lake Belva Deer (F) and Lake Darling Max Depth (F) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.

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 Belva Deer

Keokuk County, Wisconsin

Very murky, less than 2.1 ft of visibility.

F

Lake Darling Max Depth

Washington County, Wisconsin

Very murky, less than 1.6 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.

MetricLake Belva DeerLake Darling Max Depth
Overall GradeF (Very Poor)F (Very Poor)
Water Clarity2.1 ft1.6 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)40.3 µg/L60.5 µg/L
Maximum Depth--
Surface Area247 acres304 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophichypereutrophic

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

Verdict

Both lakes earn the same Grade F. The tiebreakers come down to clarity (Lake Belva Deer: 2.1 ft, Lake Darling Max Depth: 1.6 ft) and what you want from the lake. Lake Belva Deer matches its peer on species count.