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LakeQuality
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Ls94 Lake

Lake County, MinnesotaLimited DataOligotrophic

Ls94 Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Lake County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Trophically, Ls94 Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Among the 142 graded lakes in Lake County, Ls94 Lake ranks 30 — in the top quartile locally.

Ls94 Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. The state fisheries records do not list documented species for Ls94 Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Ls94 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, Minnesota DNR LakeFinder, last sampled 2021-09-18. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

No clarity data. Chlorophyll-a: 1.6 µg/L. Trophic State Index: 35.

MetricValueGrade
Water Clarity (Secchi Depth)No data
PhosphorusNo data
Chlorophyll-a (Algae)1.6 µg/LA
Trophic State Index (TSI)35Oligotrophic

Low nutrients, clear water, excellent for swimming

Invasive Species

Eurasian watermilfoilNew Zealand mud snailVHSfaucet snailround gobyruffespiny waterfleawhite perchzebra mussel

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Chlorophyll-a Declining+0.25 µg/L/yr2
See year-by-year chart →

Location

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County Ranking

Ranked #30 of 142 lakes in Lake County

Nearby Lakes in Lake County

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Ls94 Lake. 2 reports on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-09-18

Monitoring stations: 1