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LakeQuality
C

George Lake

Cass County, MinnesotaEutrophic

The LakeGrade rubric puts George Lake at a C: clarity at 4.5 ft, 40 µg/L of phosphorus, and a TSI of 56 signal an intermediate trophic state. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

At a TSI of 56, George Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake bottoms out at 20 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 612 acres, George Lake fits the Minnesota median for monitored lakes, with 6.8 miles of shoreline. Within the 133 graded lakes of Cass County, George Lake sits at rank 129, near the bottom of the county list.

No invasive species are currently listed at George Lake — the lake remains off the Minnesota infested-waters roster. The fishery is bass-led, with 11 documented species across the lake's records. Public access is available — the lake is on the Minnesota PCA public-access list. 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 2024-09-12. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 4.5 ft. Phosphorus level: 40 µg/L. Trophic State Index: 56.

MetricValueGrade
Water Clarity (Secchi Depth)4.5 ftD
Phosphorus40 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)56Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth20 ft
Surface Area612.45 acres
Shoreline Length6.8 mi
Littoral Zone99%
Public AccessYes

Fish Species

Click a species to see all Minnesota and Wisconsin lakes where it is found.

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

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

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

Water Quality Trend: Stable

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.244 m/yr5
Phosphorus Improving-5.5 µg/L/yr2

Location

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County Ranking

Ranked #129 of 133 lakes in Cass County

Nearby Lakes in Cass County

DNR Fisheries Survey Summary

4 surveys on file from MN DNR Fisheries. Most recent: 2025-06-02 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Brown Bullhead66.090.21 lb
Bluegill11.180.33 lb
Yellow Perch10.520.14 lb
Black Bullhead9.750.38 lb
GOS5.55
Northern Pike5.171.37 lb

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

Length Distributions

Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.

Brown Bullhead

541 fish · 411 in · 2025-06-02
34817404567891011

Bluegill

55 fish · 48 in · 2025-06-02
2312045678

Yellow Perch

3 fish · 57 in · 2025-06-02
210567

Black Bullhead

21 fish · 58 in · 2025-06-02
9505678

From the 2025-06-02 survey

George is a 612-acre lake near the city of Outing in Cass County. It has a DNR owned access, with a concrete ramp, on the south end of the lake. A standard survey using gill nets and trap nets was conducted in June 2025 to assess fish populations from recent winterkill events and provide information to anglers.…

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 George Lake. 4 reports 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: 2024-09-12

Monitoring stations: 1