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LakeQuality
B

Schnur Lake

Price County, WisconsinMesotrophic

On the LakeGrade scale Schnur Lake grades a B, with clarity at 9.5 ft and 17 µg/L of phosphorus placing it above the Wisconsin median. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

The lake sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. Schnur Lake reaches 27 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. Schnur Lake covers 154 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Schnur Lake ranks 4 of 27 in Price County, putting it in the upper tier of locally monitored lakes.

No invasive species are currently listed at Schnur Lake — the lake remains off the Wisconsin infested-waters roster. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. 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 2025-08-26. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Moderate clarity, visible to about 9.5 ft. Phosphorus level: 17.1 µg/L. Trophic State Index: 45.

MetricValueGrade
Water Clarity (Secchi Depth)9.5 ftC
Phosphorus17.1 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth27 ft
Surface Area154 acres

Fish Species

Click a species to see every graded lake where it is documented.

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

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

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

Water Quality Trend: Stable

Based on 7 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable+0.031 m/yr6
Phosphorus Stable-0.26 µg/L/yr7
See year-by-year chart →

Location

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County Ranking

Ranked #4 of 27 lakes in Price County

Nearby Lakes in Price County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 2000. 11 stations on file (most recent sample 2025).

DNR Assessment
Excellent · Deep Headwater lake
Trophic State Index 47 (mesotrophic) · 5-year average

Fish Species (DNR-rated)

Walleye(Abundant)Musky(Common)Panfish(Common)Northern Pike(Common)Largemouth Bass(Present)Smallmouth Bass(Present)

EPA Impairment Status

Schnur Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

MercuryNutrients (phosphorus, nitrogen)

Source: EPA ATTAINS assessment unit WI10003659 · Official waterbody report · Matched by proximity (0.92 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2025-08-26

Monitoring stations: 1

Where to stay near Schnur Lake

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