Town Line Lake is a cold, clear oligotrophic lake in Otsego County, Michigan. Water quality is graded A based on 1 sampling years through 2021. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 12 other monitored lakes in Otsego County, Town Line Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2021-09-12. 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 16.5 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.5 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 Town Line Lake
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Fishing Town Line Lake
Recreation & Access
Location & Depth Map
Free interactive depth-contour map of Town Line Lake, reaching a maximum surveyed depth of 44 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #3 of 13 lakes in Otsego County
Nearby Lakes in Otsego County
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Low nutrients, clear water, excellent for swimming
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Other Grade A Lakes in Michigan
Montmorency County · Clarity: 13 ft
Montmorency County · Clarity: 10 ft
Charlevoix County · Clarity: 17 ft
Crawford County · Clarity: 19 ft
Crawford County · Clarity: 19 ft
Kalkaska County · Clarity: 18.5 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
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2021-09-12
Monitoring stations: 1