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LakeQuality
B

Lake of the Clouds

Lake County, MinnesotaLimited DataMesotrophic

Lake of the Clouds comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Lake of the Clouds: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake's 110 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. The lake is compact at 29 acres, with 1.5 miles of shoreline and little volume to buffer nutrient inputs. Lake of the Clouds ranks 68 of 142 in Lake County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Lake of the Clouds — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Lake of the Clouds, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Lake of the Clouds — most use is by shoreline residents and their guests. 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 2022-07-03. 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 12 ft. Trophic State Index: 41.

MetricValueGrade
Water Clarity (Secchi Depth)12 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)41Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth110 ft
Surface Area28.56 acres
Shoreline Length1.5 mi
Littoral Zone49%
Public AccessNo

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Declining-0.693 m/yr4

Location

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County Ranking

Ranked #68 of 142 lakes in Lake County

Nearby Lakes in Lake County

DNR Fisheries Survey Summary

3 surveys on file from MN DNR Fisheries. Most recent: 2025-07-31 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
White Sucker4.330.88 lb
Green Sunfish2.000.1 lb

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

From the 2025-07-31 survey

Temperature and dissolved oxygen measurements were collected from the deepest basin in Lake of the Clouds Lake on July 31st, 2025. This was done to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Trout, the most sensitive coldwater species present in this lake.…

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 Lake of the Clouds. 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: 2022-07-03

Monitoring stations: 2