Hubbard Lake
Alcona County, WisconsinLimited DataOligotrophic
Hubbard Lake is a 8,800-acre cold, clear oligotrophic lake in Alcona County, MI. Water quality is graded A based on 1 sampling years through 2023. The lake supports 2 documented fish species including Lake herring and Lake whitefish. Compared to the 7 other monitored lakes in Alcona County, Hubbard Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-06-22. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 24.5 ft down. Trophic State Index: 31.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 24.5 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 31 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 8.8K acres |
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Hubbard Lake (14-day solunar calendar)
→ Is it safe to eat fish from Hubbard Lake? (mercury & PFAS guide)
→ Hubbard Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #4 of 8 lakes in Alcona County
Nearby Lakes in Alcona 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
Reservoir Info (USACE NID)
Hubbard Lake is a man-made reservoir impounded by the Hubbard Lake Dam (completed 1890), built primarily for hydroelectric on the South Br Thunder Bay River; gravity-type dam, 11 ft tall and 108 ft long.
- Surface area
- 8,800 ac
- Normal storage
- 34,200 ac-ft
- Max storage
- 35,200 ac-ft
- Drainage area
- 14.6 sq mi
- Hazard class
- Low
- Owner
- Thunder Bay Power Company
Source: USACE National Inventory of Dams, NID ID MI00176 · Operator website
EPA Impairment Status
Hubbard Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040700060504-02 · 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: 2023-06-22
Monitoring stations: 1