Marten Lake
Marten Lake in Iron County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 180.1 acres.
- Area
- 180 acres
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Water clarity at Marten Lake
Murky water. Across summers from 2018 to 2023, Marten Lake averaged 1.35 m (4 ft) of visibility down into the water, so you cannot see far below the surface in midsummer. This lake sits close to the line between clarity classes, so treat the label as approximate and the depth reading as the real number.
Nobody has taken a water sample here that we can find. Michigan's environmental agency measures clarity on lakes like this one from satellite images instead, which is why this page reports how clear the water is but carries no A–F grade.
Clear is not the same as clean. A lake can be easy to see through and still carry high nutrient levels, and a naturally tea-stained lake can be perfectly healthy. The A–F grade on other lakes is built from phosphorus and algae measured in a laboratory, and clarity alone cannot stand in for it.
The same satellite images put summer algae here at roughly 7.69 micrograms per litre. Estimating algae from orbit is far less exact than measuring clarity, so that figure is worth knowing and is not part of any rating.
Marten Lake is a 180-acre lake in Iron County, Michigan.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Marten Lake water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Marten Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Marten Lake
Compare lakeside cabins, hotels, and vacation rentals near Marten Lake in Iron County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Marten Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 180 acres |
| Shoreline Length | 0.7 mi |
The published depth figures for Marten Lake contradict each other, so no depth is shown.
Fishing Marten Lake
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Frequently asked questions about Marten Lake
Where is Marten Lake?
- Marten Lake is a lake in Iron County, Michigan. LakeQuality has not rated this lake (UNRATED) — no in-situ water sample; this lake is rated for water clarity from satellite observations instead.
What is the water quality grade for Marten Lake?
- Marten Lake in Iron County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 180.1 acres.
Is Marten Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Marten Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Marten Lake?
- The published depth figures for Marten Lake contradict each other, so no depth is shown. The lake covers 180.1 acres.
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Where this data comes from
Measurements for Marten Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.