Lindsley Lake
Gogebic County, MichiganView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Mercury
- Limited data
Lindsley Lake in Gogebic County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.5 ft visibility.
- Clarity
- 10.5 ft
- Trend
- ↑ Improving
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Stays near Lindsley Lake
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Watch Lindsley Lake’s letter
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Why Lindsley Lake has no grade
Lindsley Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Lindsley Lake is Not Rated — not an F. Its 10.5-foot median from 72 readings collected 2016–2022 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lindsley Lake is a lake in Gogebic County, Michigan. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-08. Grade methodology: LakeQuality methodology.
What Lindsley Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.5 ft of visibility
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lindsley Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Water quality measurements for Lindsley Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 10.5 ft. TSI 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Fishing Lindsley Lake
Water Quality Trend: ↑ Improving
Based on 8 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.718 m/yr | 7 |
| Phosphorus | → Stable | -0.05 µg/L/yr | 7 |
EPA Impairment Status
Lindsley 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 MI040201020101-03 · Official waterbody report · Matched by proximity (2.11 km)
Graded lakes near Lindsley Lake
Lindsley Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Gogebic County
Frequently asked questions about Lindsley Lake
Where is Lindsley Lake?
- Lindsley Lake is a lake in Gogebic County, Michigan. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lindsley Lake?
- Lindsley Lake in Gogebic County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.5 ft visibility.
Is Lindsley Lake safe to swim in?
- The letter is not a swimming clearance. Lindsley Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
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Where this data comes from
72 measurements from 1 monitoring station, 2016–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS72 samples · 2016–2022
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database