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LakeQuality

Nine Eagles Lake vs Slipbluff Lake

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

Nine Eagles Lake has a higher water quality grade (A, Excellent) than Slipbluff Lake (B, Good). Both are in Decatur County, Wisconsin.

Both Nine Eagles Lake and Slipbluff Lake 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 — Nine Eagles Lake (A) versus Slipbluff Lake (B). 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.

A

Nine Eagles Lake

Decatur County, Wisconsin

Good clarity, visible to about 11 ft.

B

Slipbluff Lake

Decatur County, Wisconsin

Moderate clarity, visible to about 9 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.

MetricNine Eagles LakeSlipbluff Lake
Overall GradeA (Excellent)B (Good)
Water Clarity11 ft9 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)3.3 µg/L4.5 µg/L
Maximum Depth--
Surface Area59 acres18 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statemesotrophicmesotrophic

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

Verdict

Nine Eagles Lake wins on overall water quality with a Grade A versus Slipbluff Lake's Grade B. Water clarity: 11 ft vs 9 ft. For fishing diversity, Nine Eagles Lake also leads with 0 species.