Twin Lakes; Grayling Twp is a cold, clear oligotrophic lake in Crawford County, Michigan. Water quality is graded A based on 2 sampling years through 2022. The lake supports 7 documented fish species including Bluegill, Fathead minnow, and Golden shiner. Compared to the 5 other monitored lakes in Crawford County, Twin Lakes; Grayling Twp ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-09-09. Grade methodology: LakeGrade methodology.
Watch Twin Lakes; Grayling Twp water quality
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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 19 ft down. Chlorophyll-a: 4.5 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 19 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 4.5 µg/L | A |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Twin Lakes; Grayling Twp
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Twin Lakes; Grayling Twp
Water Temperature
Twin Lakes; Grayling Twp averages about 61°F at the surface in summer, usually warmest in Aug (about 65°F) and coldest in May (about 50°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 117 field readings (2022–2022) via the EPA Water Quality Portal. See the full Twin Lakes; Grayling Twp water temperature breakdown →
Location
County Ranking
Ranked #3 of 6 lakes in Crawford County
Nearby Lakes in Crawford County
Explore Twin Lakes; Grayling Twp across LakeGrade
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Fish species and best lakes in Crawford County
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
Roscommon County · Clarity: 35 ft
Roscommon County · Clarity: 34 ft
Roscommon County · Clarity: 34.5 ft
Otsego County · Clarity: 18.5 ft
Otsego County · Clarity: 16.5 ft
Otsego County · Clarity: 16.5 ft
Oligotrophic Lakes in Michigan
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-09
Monitoring stations: 1