Clam Lake
Antrim County, Michigan437 acresView mapDirections
EGLE publishes the water-quality measurements for Clam Lake. Here is what has been measured.
- Public access
- Limited data
Clam Lake in Antrim County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 12 ft visibility. Surface area: 437.4 acres.
Free interactive depth-contour map of Clam Lake, reaching a maximum surveyed depth of 8 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Clam Lake is a 437-acre lake in Antrim County, Michigan. Water clarity is declining over recent sampling years. The lake supports 1 documented fish species including Muskellunge. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2024-07-17. Methodology: how these readings are compared.
Clam Lake covers about 440 acres in Antrim County. It has one public boat landing. For a place on the water, look through cabin and lake-house rentals near Clam Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Clam Lake is good for
From access and monitoring records, not editorial picks.
- Clear water12 ft of visibility
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Clam 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 Clam Lake
These are the measurements EGLE publishes for Clam 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 12 ft. TSI 41.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 12ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 41 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Clam Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
437 acres
Public access
Yes
Listed by EGLE
The available depth estimate for Clam Lake is shallower than its measured water clarity, which cannot be right, so no depth is shown.
Recreation & Access
- Clam LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Clam Lake
Compare lakeside cabins, hotels, and vacation rentals near Clam Lake in Antrim 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 Clam Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Planning a trip? Cabins and lodging at Clam Lake → · more Michigan lake trips
Follow Clam Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Clam Lake
Water Quality Trend: Stable
Based on 9 years of monitoring (2016–2024).
Water clarity
Worsening9 years
Phosphorus
Improving-0.29 µg/L/yr3 years
Chlorophyll-a
Stable0 µg/L/yr4 years
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Clam Lake under Clean Water Act (NPDES) discharge permits.
- Butchs Tackle And MarineBellaire · 1.7 mi away · NPDES MIG081132
- Butchs Tackle & MarineBellaire · 1.7 mi away · NPDES MIG080002
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Antrim County
Frequently asked questions about Clam Lake
Where is Clam Lake?
- Clam Lake is a lake in Antrim County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Clam Lake?
- Clam Lake in Antrim County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 12 ft visibility. Surface area: 437.4 acres.
Is Clam Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Clam Lake?
- The available depth estimate for Clam Lake is shallower than its measured water clarity, which cannot be right, so no depth is shown. The lake covers 437.4 acres.
What fish are in Clam Lake?
- Fish species found in Clam Lake include Muskellunge. Clam Lake is located in Antrim County, Michigan.
Are there boat ramps on Clam Lake?
- Clam Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Clam Lake. Public access is listed as yes.
Can I fish at Clam Lake?
- Clam Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Michigan's fish and wildlife agency, so check its current regulations before you go.
Explore Clam Lake across LakeQuality
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Planning a trip around Sleeping Bear Dunes?
Clam Lake is about 38 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
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Where this data comes from
90 measurements from 1 monitoring station, 2016–2024. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS90 samples · 2016–2024
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.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory