Lake George
Keweenaw County, Michigan9 acresView mapDirections
EGLE publishes the water-quality measurements for Lake George. Here is what has been measured.
- Mesotrophic
Lake George in Keweenaw County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Phosphorus: 9.9 µg/L. Surface area: 9.2 acres.
Lake George is a 9-acre mesotrophic lake in Keweenaw County, Michigan. Overall water quality is declining over recent sampling years. The lake supports 9 documented fish species including Bluegill, Bluntnose minnow, and Iowa darter. Compared to the 10 other monitored lakes in Keweenaw County, Lake George ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2024-09-03. Methodology: how these readings are compared.
What Lake George is good for
From access and monitoring records, not editorial picks.
- Fishing9 species recorded
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake George is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake George
These are the measurements EGLE publishes for Lake George, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. Phosphorus 9.9 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 9.9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lake George
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake George typically sits around 69°F at the surface in September. Summer average is about 69°F. Usually warmest in Jul (about 73°F) and coldest in Jun (about 65°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (65°F) to its warmest (73°F).
Typical surface water temperature by month, from 380 field readings (2010–2024) via the EPA Water Quality Portal. See the full Lake George water temperature breakdown →
Lake Details
Surface area
9 acres
No bathymetric survey has been published for Lake George, so its depth is not documented here.
Stays via Stay22
Stays near Lake George
Compare lakeside cabins, hotels, and vacation rentals near Lake George in Keweenaw County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake George
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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Fish Species
Click a species to see every lake where it is documented.
Fishing Lake George
Water Quality Trend: Worsening
Based on 9 years of monitoring (2016–2024).
Water clarity
Stable9 years
Phosphorus
Worsening+2.15 µg/L/yr8 years
Nearby Lakes in Keweenaw County
Frequently asked questions about Lake George
Where is Lake George?
- Lake George is a lake in Keweenaw County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Lake George?
- Lake George in Keweenaw County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Phosphorus: 9.9 µg/L. Surface area: 9.2 acres.
Is Lake George safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Lake George?
- Lake George typically sits around 69°F at the surface in September, from 380 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
What fish are in Lake George?
- Fish species found in Lake George include Bluegill, Bluntnose minnow, Iowa darter, Largemouth bass, Pumpkinseed, Redear sunfish, Rock bass, Smallmouth bass, Yellow perch. Lake George is located in Keweenaw County, Michigan.
Explore Lake George across LakeQuality
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Where this data comes from
39 measurements from 1 monitoring station, 2016–2024. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- National Park Service Water Resources Division
11NPSWRD_WQX39 samples · 2016–2024
Analytical methods
- Secchi Disk
- Alkaline Persulfate Digestion for Total N and P in Water
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.