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LakeQuality
C

Toe Lake

Lake County, MinnesotaLimited DataMesotrophic

The LakeGrade rubric puts Toe Lake at a C: clarity at 7.0 ft, phosphorus readings still being added, and a TSI of 49 signal an intermediate trophic state. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Toe Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake's 95 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. At 122 acres, Toe Lake fits the Minnesota median for monitored lakes, with 4.5 miles of shoreline. Within the 142 graded lakes of Lake County, Toe Lake sits at rank 113, near the bottom of the county list.

No invasive species are currently listed at Toe Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Toe Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. 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, Minnesota DNR LakeFinder, last sampled 2023-07-10. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 7 ft. Trophic State Index: 49.

MetricValueGrade
Water Clarity (Secchi Depth)7 ftC
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)49Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth95 ft
Surface Area121.53 acres
Shoreline Length4.5 mi
Littoral Zone37%
Public AccessNo

Water Quality Trend: Declining

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.717 m/yr4

Location

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County Ranking

Ranked #113 of 142 lakes in Lake County

Nearby Lakes in Lake County

DNR Fisheries Survey Summary

2 surveys on file from MN DNR Fisheries. Most recent: 1985-09-08 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
LKW18.840.88 lb
White Sucker2.540.54 lb
Northern Pike1.387.5 lb
Yellow Perch0.120.1 lb
Largemouth Bass0.120.1 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

From the 1985-09-08 survey

Fish populations are dominated by large numbers of small whitefish and smaller, but substantial numbers of big northern pike and small white suckers. Yellow perch and largemouth bass also present.

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Toe Lake. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Most recent sample: 2023-07-10

Monitoring stations: 1