Walloon Lake is a cold, clear oligotrophic lake in Charlevoix County, Michigan. Water quality is graded B based on 1 sampling years through 2022. The lake supports 3 documented fish species including Lake herring, Northern pike, and Yellow perch. Compared to the 18 other monitored lakes in Charlevoix County, Walloon Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-09-16. 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 13.3 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.3 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Walloon Lake
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Walloon Lake
Location & Depth Map
Free interactive depth-contour map of Walloon Lake, reaching a maximum surveyed depth of 100 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #11 of 19 lakes in Charlevoix County
Cleaner Lakes Within 30 Miles
Walloon Lake holds Grade B. One nearby lake has a higher grade.
Nearby Lakes in Charlevoix County
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Species activity outlook by water temperature and season
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Low nutrients, clear water, excellent for swimming
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Other Grade B Lakes in Michigan
Otsego County · Clarity: 10.5 ft
Antrim County · Clarity: 12.1 ft
Cheboygan County · Clarity: 12 ft
Kalkaska County · Clarity: 12.5 ft
Kalkaska County · Clarity: 12.5 ft
Cheboygan County · Clarity: 13 ft
Oligotrophic Lakes in Michigan
More records, surveys & data sources
EPA Impairment Status
Walloon 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 MI040601050102-02 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Walloon Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Melrose Twp WwtpBoyne Falls · 1.8 mi away · NPDES MI0060366Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-16
Monitoring stations: 1