Diamond Lake is a cold, clear oligotrophic lake in Osceola County, Michigan. Water quality is graded A based on 1 sampling years through 2021. The lake supports 25 documented fish species including Black crappie, Blacknose shiner, and Bluegill. Compared to the 5 other monitored lakes in Osceola County, Diamond Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2021-08-21. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 16 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Diamond Lake
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Diamond Lake
Location & Depth Map
Free interactive depth-contour map of Diamond Lake, reaching a maximum surveyed depth of 60 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #4 of 6 lakes in Osceola County
Nearby Lakes in Osceola County
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Species activity outlook by water temperature and season
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Low nutrients, clear water, excellent for swimming
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Other Grade A Lakes in Michigan
Missaukee County · Clarity: 26.2 ft
Mecosta County · Clarity: 12.8 ft
Manistee County · Excellent
Manistee County · Excellent
Mecosta County · Clarity: 10 ft
Manistee County · Excellent
Oligotrophic Lakes in Michigan
More records, surveys & data sources
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-08-21
Monitoring stations: 1