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

How deep is Long Lake?

Long Lake has a maximum depth of 80 feet. The lake covers 274 acres.

Are there boat ramps on Long Lake?

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

Can I fish at Long Lake?

Long 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.

Long Lake

Cass County, Minnesota274 acresView map Directions

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

Max depth

80 ft

Bathymetric survey

Area

274 acres

Surface area

Shoreline

4 mi

Measured length

80 ft max depth
Public access

See the measurements Directions Where to stay

Long Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 80 ft. Surface area: 274 acres.

Loading map…

Long Lake is a 274-acre lake in Cass County, Minnesota with a maximum depth of 80 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 Long Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water80 ft surveyed max depth

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Long 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 Park Rapids →

Get alerts for Long Lake →

Water quality measurements for Long Lake

These are the measurements Minnesota PCA publishes for Long 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 Long Lake

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

Lake Details

Max depth

80 ft

Surface area

274 acres

Shoreline

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

WalkerPublic

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

Stays via Stay22

Stays near Long Lake

Compare lakeside cabins, hotels, and vacation rentals near Long Lake in Cass 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 Long Lake

Prices for Oct 16–18, 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 Long Lake’s readings

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

Or email

Fishing Long Lake

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

Nearby Lakes in Cass County

Third Lake1 miView →Lake May1.2 miView →Upper Fifth Lake1.2 miView →Fifth Lake1.7 miView →Shingobee Bay Lake10.6 ft clear · Mesotrophic2.3 miView →Ten Lake2.5 miView →

Frequently asked questions about Long Lake

Where is Long Lake?: Long Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Long Lake?: Long Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 80 ft. Surface area: 274 acres.
Is Long Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Long Lake?: Long Lake has a maximum depth of 80 feet. The lake covers 274 acres.
Are there boat ramps on Long Lake?: Long Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Walker. Public access is listed as yes.
Can I fish at Long Lake?: Long 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.