Where is Big Twin Lake?

Big Twin 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 Big Twin Lake?

Big Twin Lake has a maximum depth of 13.2 feet. The lake covers 413 acres.

Are there boat ramps on Big Twin Lake?

Big Twin Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Big Twin Lake. Public access is listed as yes.

Can I fish at Big Twin Lake?

Big Twin 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.

Big Twin Lake

Martin County, Minnesota413 acresView map Directions

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

Max depth

13.2 ft

Bathymetric survey

Area

413 acres

Surface area

Shoreline

5.4 mi

Measured length

Impaired · Impaired biota (cause unknown)
13 ft max depth
Public access

See the measurements Directions Where to stay

Big Twin Lake in Martin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 13.2 ft. Surface area: 413 acres.

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Big Twin Lake is a 413-acre lake in Martin County, Minnesota with a maximum depth of 13 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 Big Twin Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Big Twin Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Big Twin 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.

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Water quality measurements for Big Twin Lake

These are the measurements Minnesota PCA publishes for Big Twin 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 Big Twin Lake

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

Lake Details

Max depth

13.2 ft

Surface area

413 acres

Shoreline

5.4 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

Big Twin LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

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Stays near Big Twin Lake

Compare lakeside cabins, hotels, and vacation rentals near Big Twin 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.

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Fishing Big Twin Lake

→ Big Twin Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Big Twin Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Impaired biota (cause unknown)MercuryNutrients (phosphorus, nitrogen)

Designated uses not supporting: Aquatic life, Fish consumption, Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN46-0133-00 · Official waterbody report

Nearby Lakes in Martin County

Little Twin Lake0.7 miView →Lake Seymour3.2 miView →Cedar Lake3.9 miView →Watkins Lake3 miView →Round Lake4 miView →Clam Lake3.7 miView →

Frequently asked questions about Big Twin Lake

Where is Big Twin Lake?: Big Twin 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 Big Twin Lake?: Big Twin Lake in Martin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 13.2 ft. Surface area: 413 acres.
Is Big Twin Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Big Twin Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Big Twin Lake?: Big Twin Lake has a maximum depth of 13.2 feet. The lake covers 413 acres.
Are there boat ramps on Big Twin Lake?: Big Twin Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Big Twin Lake. Public access is listed as yes.
Can I fish at Big Twin Lake?: Big Twin 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.