Green Lake
Green Lake in Grand Traverse County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 12.8 ft visibility. Maximum depth: 102 ft. Surface area: 1995.9 acres.
- Clarity
- 12.8 ft
- Max depth
- 102 ft
- Area
- 1,996 acres
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Why Green Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Green Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Green Lake is a 1,996-acre lake in Grand Traverse County, Michigan with a maximum depth of 102 feet. The lake supports 11 documented fish species including Bluntnose minnow, Brook silverside, and Common shiner.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2019-09-21. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Green Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 12.8 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Green Lake
Compare lakeside cabins, hotels, and vacation rentals near Green Lake in Grand Traverse County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Green Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 102 ft |
| Surface Area | 1,996 acres |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Green Lake
EPA Impairment Status
Green Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040601040302-03 · Official waterbody report
Graded lakes near Green Lake
Green Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Grand Traverse County
Frequently asked questions about Green Lake
Where is Green Lake?
- Green Lake is a lake in Grand Traverse County, Michigan. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Green Lake?
- Green Lake in Grand Traverse County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 12.8 ft visibility. Maximum depth: 102 ft. Surface area: 1995.9 acres.
Is Green Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Green Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Green Lake?
- Green Lake has a maximum depth of 102 feet. The lake covers 1995.9 acres.
What fish are in Green Lake?
- Fish species found in Green Lake include Bluntnose minnow, Brook silverside, Common shiner, Hornyhead chub, Johnny darter, Lake herring, Mimic shiner, Northern logperch, Rock bass, Spottail shiner, White sucker. Green Lake is located in Grand Traverse County, Michigan.
Explore Green Lake across LakeQuality
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Where this data comes from
6 measurements from 1 monitoring station, 2019. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS6 samples · 2019
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)