Blue Lake
Mecosta County, Michigan221 acresView mapDirections
EGLE publishes the water-quality measurements for Blue Lake. Here is what has been measured.
- 50 ft max depth
- Limited data
Blue Lake in Mecosta County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 10.5 ft visibility. Maximum depth: 50 ft. Surface area: 221.3 acres.
Free interactive depth-contour map of Blue Lake, reaching a maximum surveyed depth of 50 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Blue Lake is a 221-acre lake in Mecosta County, Michigan with a maximum depth of 50 feet. Overall water quality is declining 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 2022-09-15. Methodology: how these readings are compared.
What Blue Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.5 ft of visibility
- Fishing3 species recorded
- Deep water50 ft surveyed max depth
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.
Good clarity, visible to about 10.5 ft. TSI 43.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.5ft | 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. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Blue Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
50 ft
Surface area
221 acres
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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: Worsening
Based on 7 years of monitoring (2016–2023).
Water clarity
Stable7 years
Phosphorus
Stable-0.02 µg/L/yr7 years
Chlorophyll-a
Worsening+0.21 µg/L/yr7 years
Nearby Lakes in Mecosta County
Frequently asked questions about Blue Lake
Where is Blue Lake?
- Blue Lake is a lake in Mecosta 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 Mecosta County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 10.5 ft visibility. Maximum depth: 50 ft. Surface area: 221.3 acres.
Is Blue Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Blue Lake?
- Blue Lake has a maximum depth of 50 feet. The lake covers 221.3 acres.
What fish are in Blue Lake?
- Fish species found in Blue Lake include Brook stickleback, Brook trout, Central mudminnow. Blue Lake is located in Mecosta County, Michigan.
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Where this data comes from
77 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
NALMS77 samples · 2016–2022
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.