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LakeQuality
B

Rabbit Lake

Lake County, MinnesotaLimited DataOligotrophic

On the LakeGrade scale Rabbit Lake grades a B, with clarity at 13.5 ft and phosphorus readings still being added placing it above the Minnesota median. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Trophically, Rabbit Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. Rabbit Lake is unusually deep for Minnesota at 105 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. Rabbit Lake covers 117 acres alongside 3.4 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Rabbit Lake ranks 41 of 142 in Lake County — solidly in the upper half of the local distribution.

Rabbit Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Rabbit 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. 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, Minnesota DNR LakeFinder, last sampled 2023-06-09. 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 13.5 ft. Trophic State Index: 40.

MetricValueGrade
Water Clarity (Secchi Depth)13.5 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)40Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth105 ft
Surface Area117.02 acres
Shoreline Length3.4 mi
Littoral Zone17%
Public AccessNo

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Declining-0.221 m/yr4

Location

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County Ranking

Ranked #41 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: 2025-08-01 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Lake Trout5.25
BUB1.25
White Sucker1.25

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

From the 2025-08-01 survey

Temperature and dissolved oxygen measurements were collected from the deepest basin in Rabbit Lake on August 1st, 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. Lake Trout…

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 Rabbit 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: 2023-06-09

Monitoring stations: 1