Lake Gogebic; South Deep Basin; Marenisco Township
Gogebic County, WisconsinEutrophic
Lake Gogebic; South Deep Basin; Marenisco Township is a productive, nutrient-rich eutrophic lake in Gogebic County, MI. Water quality is graded C based on 2 sampling years through 2023. The lake supports 1 documented fish species including Yellow perch. Compared to the 39 other monitored lakes in Gogebic County, Lake Gogebic; South Deep Basin; Marenisco Township ranks #29 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-09-27. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 6.5 ft. Chlorophyll-a: 8.6 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.5 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 8.6 µg/L | B |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
Location
County Ranking
Ranked #29 of 40 lakes in Gogebic County
Nearby Lakes in Gogebic County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Cass County · Clarity: 7 ft
Leelanau County · Clarity: 9.5 ft
Iosco County · Clarity: 5.5 ft
Muskegon County · Clarity: 6.8 ft
Gladwin County · Clarity: 9 ft
Montmorency County · Clarity: 9 ft
Eutrophic Lakes in Wisconsin
EPA Impairment Status
Lake Gogebic; South Deep Basin; Marenisco Township 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 MI040201020404-06 · Official waterbody report · Matched by proximity (1.93 km)
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: 2023-09-27
Monitoring stations: 1