Blue Lake
Iron County, Michigan18 acresView mapDirections
EGLE publishes the water-quality measurements for Blue Lake. Here is what has been measured.
- Limited data
Blue Lake in Iron County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 21.5 ft visibility. Surface area: 18.3 acres.
Blue Lake is a 18-acre lake in Iron County, Michigan. Water clarity is improving over recent sampling years. The lake supports 3 documented fish species including Brook stickleback, Brook trout, and Central mudminnow.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-16. Methodology: how these readings are compared.
What Blue Lake is good for
From access and monitoring records, not editorial picks.
- Clear water21.5 ft of visibility
- Fishing3 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Blue Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Blue Lake
These are the measurements EGLE publishes for Blue Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 21.5 ft down. TSI 33.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 21.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 33 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Blue Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
18 acres
No bathymetric survey has been published for Blue Lake, so its depth is not documented here.
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Stays near Blue Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Blue Lake
Water Quality Trend: Stable
Based on 5 years of monitoring (2019–2023).
Water clarity
Improving5 years
Phosphorus
Worsening+0.5 µg/L/yr3 years
Nearby Lakes in Iron County
Frequently asked questions about Blue Lake
Where is Blue Lake?
- Blue Lake is a lake in Iron County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Blue Lake?
- Blue Lake in Iron County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 21.5 ft visibility. Surface area: 18.3 acres.
Is Blue Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What fish are in Blue Lake?
- Fish species found in Blue Lake include Brook stickleback, Brook trout, Central mudminnow. Blue Lake is located in Iron County, Michigan.
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Where this data comes from
60 measurements from 1 monitoring station, 2019–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS60 samples · 2019–2022
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.