Rennie Lake
Grand Traverse County, Michigan226 acresView mapDirections
EGLE publishes the water-quality measurements for Rennie Lake. Here is what has been measured.
- Mesotrophic
- 27 ft max depth
Rennie Lake in Grand Traverse County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 14 ft visibility. Phosphorus: 8 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 27 ft. Surface area: 225.8 acres.
Rennie Lake is a 226-acre mesotrophic lake in Grand Traverse County, Michigan with a maximum depth of 27 feet. 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 4 other monitored lakes in Grand Traverse County, Rennie Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-10. Methodology: how these readings are compared.
What Rennie Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14 ft of visibility
- Fishing9 species recorded
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Rennie 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 Rennie Lake
These are the measurements EGLE publishes for Rennie 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 14 ft. Phosphorus 8 µg/L. Chlorophyll-a 3.5 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 8µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 3.5µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 39 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Rennie Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Rennie Lake typically sits around 69°F at the surface in September. Summer average is about 72°F. Usually warmest in Aug (about 75°F) and coldest in May (about 56°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (56°F) to its warmest (75°F).
Typical surface water temperature by month, from 117 field readings (2021–2021) via the EPA Water Quality Portal. See the full Rennie Lake water temperature breakdown →
Lake Details
Max depth
27 ft
Surface area
226 acres
Stays via Stay22
Stays near Rennie Lake
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Top-rated places to stay near Rennie Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Rennie Lake
Water Quality Trend: Stable
Based on 8 years of monitoring (2016–2023).
Water clarity
Improving8 years
Phosphorus
Stable+0.16 µg/L/yr7 years
Chlorophyll-a
Worsening+0.67 µg/L/yr4 years
Nearby Lakes in Grand Traverse County
Frequently asked questions about Rennie Lake
Where is Rennie Lake?
- Rennie Lake is a lake in Grand Traverse County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Rennie Lake?
- Rennie Lake in Grand Traverse County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 14 ft visibility. Phosphorus: 8 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 27 ft. Surface area: 225.8 acres.
Is Rennie Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Rennie Lake?
- Rennie Lake typically sits around 69°F at the surface in September, from 117 EPA Water Quality Portal field readings (2021–2021). That is a typical value for the month, not a live reading.
How deep is Rennie Lake?
- Rennie Lake has a maximum depth of 27 feet. The lake covers 225.8 acres.
What fish are in Rennie Lake?
- Fish species found in Rennie Lake include Bluegill, Bluntnose minnow, Brown bullhead, Green sunfish, Iowa darter, Largemouth bass, Sand shiner, Western banded killifish, Yellow perch. Rennie Lake is located in Grand Traverse County, Michigan.
Explore Rennie Lake across LakeQuality
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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 readings
Michigan's cleanest lakes, ranked on agency measurements
Planning a trip around Sleeping Bear Dunes?
Rennie Lake is about 33 miles from Sleeping Bear Dunes National Lakeshore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Sleeping Bear Dunes →More lakes in Michigan
Other Lakes in Michigan
Mesotrophic Lakes in Michigan
Where this data comes from
152 measurements from 1 monitoring station, 2016–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS152 samples · 2016–2023
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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.