Rennie Lake is a mesotrophic lake in Grand Traverse County, Michigan. Water quality is graded B based on 1 sampling years through 2022. Water clarity is improving over recent sampling years. The lake supports 9 documented fish species including Bluegill, Bluntnose minnow, and Brown bullhead. Compared to the 19 other monitored lakes in Grand Traverse County, Rennie Lake ranks #17 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-09-18. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Rennie Lake
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Rennie Lake
Water Quality Trend: → Stable
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.703 m/yr | 4 |
| Chlorophyll-a | ↓ Declining | +0.15 µg/L/yr | 3 |
Location & Depth Map
Free interactive depth-contour map of Rennie Lake, reaching a maximum surveyed depth of 27 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #17 of 20 lakes in Grand Traverse County
Cleaner Lakes Within 30 Miles
Rennie Lake holds Grade B. 2 nearby lakes hold higher grades.
Nearby Lakes in Grand Traverse County
Explore Rennie Lake across LakeGrade
Fish species and top-graded lakes across Michigan
Fish species and best lakes in Grand Traverse County
Species activity outlook by water temperature and season
Top lakes and where to stay in the Grand Traverse Region area
Where to stay at Michigan's top lakes, each with its grade
Moderate nutrients, good water quality
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Other Grade B Lakes in Michigan
Antrim County · Clarity: 14.5 ft
Leelanau County · Clarity: 11.8 ft
Leelanau County · Clarity: 12.5 ft
Antrim County · Clarity: 12.1 ft
Wexford County · Clarity: 9.3 ft
Benzie County · Clarity: 13.8 ft
Mesotrophic 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: 2022-09-18
Monitoring stations: 1