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LakeQuality
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Malone Lake

Shawano County, WisconsinOligotrophic

Malone Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Shawano County. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

Trophically, Malone Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. A maximum depth of 31 ft puts Malone Lake in the middle of Wisconsin's depth distribution. Malone Lake is small — 14 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Malone Lake ranks 11 of 27 in Shawano County — solidly in the upper half of the local distribution.

Malone Lake has at least one documented invasive species (Chinese Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. Bass fishing is part of the appeal: the species list runs to 3, anchored by largemouth and/or smallmouth bass. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-10-08. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 44.3 ft down. Phosphorus level: 16 µg/L. Trophic State Index: 33.

MetricValueGrade
Water Clarity (Secchi Depth)44.3 ftA
Phosphorus16 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)33Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth31 ft
Surface Area14 acres

Fish Species

Click a species to see all Wisconsin and Minnesota lakes where it is found.

→ Best fishing times for Malone Lake (14-day solunar calendar)

→ Is it safe to eat fish from Malone Lake? (mercury & PFAS guide)

Malone Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Chinese Mystery Snail

Water Quality Trend: Improving

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable+0.188 m/yr2
Phosphorus Improving-2.5 µg/L/yr2

Location

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County Ranking

Ranked #11 of 27 lakes in Shawano County

Nearby Lakes in Shawano County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages.

Fish Species (DNR-rated)

Largemouth Bass(Abundant)Panfish(Present)Trout(Present)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2025-10-08

Monitoring stations: 1