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LakeQuality
B

Loon Lake

Oscoda County, WisconsinLimited DataOligotrophic

Loon Lake is a cold, clear oligotrophic lake in Oscoda County, MI. Water quality is graded B based on 1 sampling years through 2022. The lake supports 13 documented fish species including Black bullhead, Blackchin shiner, and Bluegill. Compared to the 2 other monitored lakes in Oscoda County, Loon Lake ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-09. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 14.5 ft. Trophic State Index: 39.

MetricValueGrade
Water Clarity (Secchi Depth)14.5 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)39Oligotrophic

Low nutrients, clear water, excellent for swimming

Fish Species

Black bullheadBlackchin shinerBluegillBluntnose minnowCentral mudminnowGreen sunfishLake herringLargemouth bassPumpkinseedRock bassWestern banded killifishWhite suckerYellow perch

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

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

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

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

Location

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County Ranking

Ranked #3 of 3 lakes in Oscoda County

Cleaner Lakes Within 30 Miles

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

See full comparison →

Nearby Lakes in Oscoda County

A
Mack Lake; Mentor Township; Section 9
Oscoda County
A
Loon Lake East Basin; T25north R2e
Oscoda County
B
Au Sable Lake
Ogemaw County
A
Au Sable Lake East Central Basin,Goodar Township
Ogemaw County
B
Chain Lakes
Iosco County
A
Chain Lakes East Basin
Iosco County

More Wisconsin Lake Rankings

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Top 25 by overall water quality score

Best swimming lakes in Wisconsin

Grade A/B + low algae filter

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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

Oligotrophic Lakes in Wisconsin

Lake Ann Southeast Basin; Almira Township Section 26Windover Lake South Basin; Freeman TownshipSquaw LakeMoon Lake Central Basin; Watersmeet Township

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2022-09-09

Monitoring stations: 1