George Lake
Bayfield County, WisconsinLimited DataOligotrophic
George Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth.
A TSI value of 39 puts George Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. The lake's 50 ft maximum depth is in the upper tier for Wisconsin — deep enough for cold-water fish to find refuge in summer. The lake is compact at 50 acres, with partial shoreline records and little volume to buffer nutrient inputs. George Lake sits at rank 38 of 52 in Bayfield County, in the lower half of the local distribution.
George Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery is bass-led, with 2 documented species across the lake's records. 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, Wisconsin DNR Surface Water, last sampled 2024-08-15. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 14 ft. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 50 ft |
| Surface Area | 50 acres |
Fish Species
Click a species to see all Wisconsin and Minnesota 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)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.264 m/yr | 6 |
Location
County Ranking
Ranked #38 of 52 lakes in Bayfield County
Cleaner Lakes Within 30 Miles
George Lake holds Grade B. 3 nearby lakes hold higher grades.
Nearby Lakes in Bayfield County
More Wisconsin Lake Rankings
State Parks Near George Lake
Other Grade B Lakes in Wisconsin
Oligotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2024).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for George Lake covering fish populations, stocking, water quality, and management. 1 report on file.
- 2022George Lake spring shocking survey, 2022Spring Shocking Survey · WI DNR · 2022 (PDF)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-08-15
Monitoring stations: 1