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LakeQuality
B

Lake George

Keweenaw County, WisconsinMesotrophic

Lake George is a mesotrophic lake in Keweenaw County, MI. Water quality is graded B based on 2 sampling years through 2024. The lake supports 9 documented fish species including Bluegill, Bluntnose minnow, and Iowa darter. Compared to the 18 other monitored lakes in Keweenaw County, Lake George ranks #13 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-03. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Moderate clarity, visible to about 8 ft. Phosphorus level: 9.9 µg/L. Trophic State Index: 42.

MetricValueGrade
Water Clarity (Secchi Depth)8 ftC
Phosphorus9.9 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)42Mesotrophic

Moderate nutrients, good water quality

Fish Species

BluegillBluntnose minnowIowa darterLargemouth bassPumpkinseedRedear sunfishRock bassSmallmouth bassYellow perch

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

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

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

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

Location

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County Ranking

Ranked #13 of 19 lakes in Keweenaw County

Cleaner Lakes Within 30 Miles

Lake George holds Grade B. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Keweenaw County

A
Lake Gratiot
Keweenaw County
A
Su10 Lake
Keweenaw County
A
Gratiot Lake
Keweenaw County
A
Su14 Lake
Keweenaw County
A
Su12 Lake
Keweenaw County
A
Su13 Lake
Keweenaw County

More Wisconsin Lake Rankings

Cleanest lakes in Wisconsin

Top 25 by overall water quality score

Best swimming lakes in Wisconsin

Grade A/B + low algae filter

Family fishing lakes in Wisconsin

Panfish-rich, public access

All Wisconsin lakes

Full state directory

Other Grade B Lakes in Wisconsin

Middle Lake; Elba Township; Section 13

Lapeer County · Clarity: 9.5 ft

Portage Lake

Livingston County · Clarity: 13 ft

Bear Lake East Basin; Pleasanton Township

Manistee County · Clarity: 11 ft

Bass Lake

Lake County · Clarity: 14 ft

Long Lake

Cass County · Clarity: 10.5 ft

Byram Lake West Central Basin; Fenton Township

Genesee County · Clarity: 10 ft

Mesotrophic Lakes in Wisconsin

Middle Lake; Elba Township; Section 13Portage LakeShavehead Lake East Basin; Porter TownshipChippewa Lake Northeast Basin; Chippewa Township

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-09-03

Monitoring stations: 1