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LakeQuality
D

Mead Lake Nb Test Site

Clark County, WisconsinLimited DataEutrophic

On the scoring rubric Mead Lake Nb Test Site grades a D: clarity at 6.6 ft and phosphorus readings still being added keep it in the lower bracket for Clark 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.

At a TSI of 50, Mead Lake Nb Test Site reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. Mead Lake Nb Test Site reaches 16 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 310 acres, Mead Lake Nb Test Site fits the Wisconsin median for monitored lakes, with partial shoreline records. Mead Lake Nb Test Site ranks 2 of 4 in Clark County — solidly in the upper half of the local distribution.

Mead Lake Nb Test Site has at least one documented invasive species (Curly-Leaf Pondweed), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. Walleye are documented at Mead Lake Nb Test Site, one of 5 fish species on record for the lake. A documented public access point at Mead Lake Nb Test Site makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2025-09-28. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 6.6 ft. Trophic State Index: 50.

MetricValueGrade
Water Clarity (Secchi Depth)6.6 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)50Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth16 ft
Surface Area310 acres
Public AccessYes

Fish Species

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

→ Best fishing times for Mead Lake Nb Test Site (14-day solunar calendar)

→ Is it safe to eat fish from Mead Lake Nb Test Site? (mercury & PFAS guide)

Mead Lake Nb Test Site fishing regulations (limits, seasons, special rules)

Invasive Species

Curly-Leaf PondweedPurple Loosestrife

Water Quality Trend: Stable

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

MetricTrendChange/YearYears
Water Clarity Declining-0.125 m/yr5
Phosphorus Improving-36.5 µg/L/yr3

Recreation & Access

2
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #2 of 4 lakes in Clark County

Nearby Lakes in Clark County

Eutrophic Lakes in Wisconsin

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1996. 6 stations on file (most recent sample 2025).

DNR Assessment
Fair · Reservoir lake
Trophic State Index 68 (eutrophic) · 5-year average

Fish Species (DNR-rated)

Largemouth Bass(Abundant)Panfish(Common)Walleye(Common)Musky(Present)Smallmouth 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: 2025-09-28

Monitoring stations: 1