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LakeQuality
B

Arkdale Lake

Adams County, WisconsinMesotrophic

Arkdale Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. 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.

A TSI near 43 places Arkdale Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. At only 11 ft deep, Arkdale Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. Arkdale Lake is small — 46 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Within the 20 graded lakes of Adams County, Arkdale Lake sits at rank 17, near the bottom of the county list.

Zebra mussel presence at Arkdale Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. Bass fishing is part of the appeal: the species list runs to 3, anchored by largemouth and/or smallmouth bass. A documented public access point at Arkdale Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-07-21. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 14.8 ft. Phosphorus level: 21.8 µg/L. Trophic State Index: 43.

MetricValueGrade
Water Clarity (Secchi Depth)14.8 ftB
Phosphorus21.8 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)43Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth10.5 ft
Surface Area46 acres
Public AccessYes

Fish Species

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

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

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

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

Invasive Species

Chinese Mystery SnailCurly-Leaf PondweedEurasian Water-MilfoilPurple LoosestrifeRusty CrayfishZebra Mussel

Water Quality Trend: Declining

Based on 6 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable-0.027 m/yr5
Phosphorus Declining+1.25 µg/L/yr5

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #17 of 20 lakes in Adams County

Nearby Lakes in Adams County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2004. 1 station on file (most recent sample 2025).

DNR Assessment
Reported
Trophic State Index 39 (oligotrophic) · 5-year average

Fish Species (DNR-rated)

Northern Pike(Common)Panfish(Present)Largemouth Bass(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: 2025-07-21

Monitoring stations: 1