Long Lake West Basin is a mesotrophic lake in Gogebic County, Michigan. Water quality is graded B based on 1 sampling years through 2021. Water clarity is improving over recent sampling years. Compared to the 39 other monitored lakes in Gogebic County, Long Lake West Basin ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2021-09-15. Grade methodology: LakeGrade methodology.
Watch Long Lake West Basin water quality
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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 11.5 ft. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11.5 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Long Lake West Basin
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Fishing Long Lake West Basin
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +3.71 m/yr | 3 |
| Chlorophyll-a | ↓ Declining | +2.1 µg/L/yr | 2 |
Location
County Ranking
Ranked #10 of 40 lakes in Gogebic County
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Moderate nutrients, good water quality
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Other Grade B Lakes in Michigan
Iron County · Clarity: 14.5 ft
Iron County · Clarity: 11 ft
Iron County · Clarity: 13.5 ft
Iron County · Clarity: 11 ft
Iron County · Clarity: 11 ft
Iron County · Clarity: 13 ft
Mesotrophic Lakes in Michigan
More records, surveys & data sources
EPA Impairment Status
Long Lake West Basin 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 MI040201020101-14 · Official waterbody report · Matched by proximity (1.91 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
Most recent sample: 2021-09-15
Monitoring stations: 1