George Lake
Blue Earth County, MinnesotaEutrophic
George Lake earns an F: 129 µg/L of phosphorus and clarity at 2.5 ft signal heavy nutrient loading from the surrounding watershed. With clarity and phosphorus scored, the sub-grades cluster within a letter of each other, pointing to stable conditions rather than one specific stressor.
At a TSI of 69, George Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. A maximum depth of 28 ft puts George Lake in the middle of Minnesota's depth distribution. George Lake is small — 88 acres alongside 1.5 miles of shoreline — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Within Blue Earth County's 9 graded lakes, George Lake ranks 6 — below the local median, though not at the bottom.
No invasive species are currently listed at George Lake — the lake remains off the Minnesota infested-waters roster. Bass fishing is part of the appeal: the species list runs to 9, anchored by largemouth and/or smallmouth bass. A documented public access point at George Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2024-09-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 2.5 ft of visibility. Phosphorus level: 129 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 ft | F |
| Phosphorus | 129 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 28 ft |
| Surface Area | 88.24 acres |
| Shoreline Length | 1.5 mi |
| Littoral Zone | 69% |
| Public Access | Yes |
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).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.093 m/yr | 5 |
| Phosphorus | ↓ Declining | +12.5 µg/L/yr | 2 |
Location
County Ranking
Ranked #6 of 9 lakes in Blue Earth County
Cleaner Lakes Within 30 Miles
George Lake holds Grade F. 3 nearby lakes hold higher grades.
- DMadison LakeBlue Earth County · mi · Higher grade (F → D)
- FWashington LakeLe Sueur County · mi · Higher overall water quality score
- FEmily LakeLe Sueur County · mi · Higher overall water quality score
Nearby Lakes in Blue Earth County
More Minnesota Lake Rankings
State Parks Near George Lake
Other Grade F Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
9 surveys on file from MN DNR Fisheries. Most recent: 2023-04-19 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 52.05 | 0.14 lb |
| Black Crappie | 42.19 | 0.16 lb |
| Largemouth Bass | 12.57 | 1.49 lb |
| Black Bullhead | 10.20 | 1.09 lb |
| Yellow Bass | 4.91 | 1.23 lb |
| Walleye | 4.08 | 2.69 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.
Bluegill
Black Crappie
Largemouth Bass
Black Bullhead
From the 2023-04-19 survey
Three trap nets were set on 19 April 2023 to assess winterkill. Bluegill, Black Crappie, and Black Bullheads were all sampled in high numbers. Northern Pike, Largemouth Bass, and Yellow Perch were also present. Some dead fish were observed on the shoreline but the extent of any winterkill was modest.
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for George Lake. 2 reports on file.
- —Fisheries Lake Survey — GeorgeFisheries Lake Survey · MN DNR LakeFinder
- —Public Water Access Sites — GeorgePublic Water Access Sites · MN DNR LakeFinder
EPA Impairment Status
George Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN07-0047-00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Most recent sample: 2024-09-25
Monitoring stations: 1