Walloon Lake
Emmet County, WisconsinLimited DataOligotrophic
Walloon Lake is a cold, clear oligotrophic lake in Emmet County, MI. Water quality is graded A based on 1 sampling years through 2022. The lake supports 20 documented fish species including Black crappie, Blacknose shiner, and Bluegill. Compared to the 9 other monitored lakes in Emmet County, Walloon Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-02-17. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
No clarity data. Phosphorus level: 3.4 µg/L. Trophic State Index: 22.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 3.4 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 22 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Walloon Lake (14-day solunar calendar)
→ Is it safe to eat fish from Walloon Lake? (mercury & PFAS guide)
→ Walloon Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #4 of 10 lakes in Emmet County
Nearby Lakes in Emmet County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Mecosta County · Clarity: 12.8 ft
Benzie County · Clarity: 13.5 ft
Clare County · Clarity: 15 ft
Kalkaska County · Clarity: 16 ft
Gogebic County · Clarity: 18 ft
Iron County · Clarity: 16 ft
Oligotrophic Lakes in Wisconsin
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
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-02-17
Monitoring stations: 3