Lake Gogebic; South Deep Basin; Marenisco Township is a productive, nutrient-rich eutrophic lake in Gogebic County, Michigan. Water quality is graded C based on 2 sampling years through 2023. The lake supports 1 documented fish species including Yellow perch. Public access is available with 2 public boat landings. 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, Michigan DNR, last sampled 2023-09-27. Grade methodology: LakeGrade methodology.
Watch Lake Gogebic; South Deep Basin; Marenisco Township water quality
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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
Where to stay near Lake Gogebic; South Deep Basin; Marenisco Township
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Lake Gogebic; South Deep Basin; Marenisco Township
- → Lake Gogebic; South Deep Basin; Marenisco Township fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Lake Gogebic; South Deep Basin; Marenisco Township fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Lake Gogebic; South Deep Basin; Marenisco Township? (mercury & PFAS guide)
Recreation & Access
Water Temperature
Lake Gogebic; South Deep Basin; Marenisco Township averages about 68°F at the surface in summer, usually warmest in Aug (about 72°F) and coldest in May (about 44°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 79 field readings (2022–2023) via the EPA Water Quality Portal. See the full Lake Gogebic; South Deep Basin; Marenisco Township water temperature breakdown →
Location
County Ranking
Ranked #29 of 40 lakes in Gogebic County
Nearby Lakes in Gogebic County
Explore Lake Gogebic; South Deep Basin; Marenisco Township across LakeGrade
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Fish species and best lakes in Gogebic County
Species activity outlook by water temperature and season
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Where to stay at Michigan's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
Michigan's cleanest and most-polluted lakes, ranked
More Michigan Lake Rankings
Other Grade C Lakes in Michigan
Ontonagon County · Clarity: 6.5 ft
Iron County · Clarity: 6 ft
Iron County · Clarity: 9.3 ft
Iron County · Clarity: 8.5 ft
Iron County · Clarity: 7.3 ft
Iron County · Clarity: 7.5 ft
Eutrophic Lakes in Michigan
More records, surveys & data sources
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)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2023-09-27
Monitoring stations: 1