Clam Lake is a lake in Martin County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.

How deep is Clam Lake?

Clam Lake has a maximum depth of 5.9 feet. The lake covers 67 acres.

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 Minnesota's fish and wildlife agency, so check its current regulations before you go.

Clam Lake

Martin County, Minnesota67 acresView map Directions

No nutrient or algae sampling on record from Minnesota PCA for this lake.

Max depth

5.9 ft

Bathymetric survey

Area

67 acres

Surface area

Shoreline

1.4 mi

Measured length

6 ft max depth
Public access

See the measurements Directions Where to stay

Clam Lake in Martin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 5.9 ft. Surface area: 67 acres.

Loading map…

Clam Lake is a 67-acre lake in Martin County, Minnesota with a maximum depth of 6 feet. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.

What Clam Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Not rated

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 Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

Compare swimming lakes near Mankato →

Get alerts for Clam Lake →

Water quality measurements for Clam Lake

These are the measurements Minnesota PCA 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.

No clarity data. TSI undefined.

Ask about Clam Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

5.9 ft

Surface area

67 acres

Shoreline

1.4 mi

Public access

Yes

Listed by Minnesota PCA

The depth above comes from a bathymetric survey of this lake, not from a regional estimate.

Recreation & Access

Boat Landings

Yes

Public 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 Martin County, Minnesota — 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.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a whole trip? See where to stay at Minnesota’s top lakes →

Follow Clam Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Clam Lake

→ Clam Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in Martin County

Round Lake2 miView →Lake Seymour2.2 miView →Creek Lake3.1 miView →Fox Lake1 ft clear · Hypereutrophic3.8 miView →Little Twin Lake3.3 miView →Big Twin Lake3.7 miView →

Frequently asked questions about Clam Lake

Where is Clam Lake?: Clam Lake is a lake in Martin County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Clam Lake?: Clam Lake in Martin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 5.9 ft. Surface area: 67 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?: Clam Lake has a maximum depth of 5.9 feet. The lake covers 67 acres.
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 Minnesota's fish and wildlife agency, so check its current regulations before you go.