Where is Portage Lake?

Portage 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 Portage Lake?

Portage Lake has a maximum depth of 52.7 feet. The lake covers 1528 acres.

Are there boat ramps on Portage Lake?

Portage Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Portage Lake, Iowana Beach Resort. Public access is listed as yes.

Can I fish at Portage Lake?

Portage Lake has 2 documented boat landings 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.

Portage Lake

Cass County, Minnesota1,528 acresView map Directions

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

Max depth

52.7 ft

Bathymetric survey

Area

1,528 acres

Surface area

Shoreline

8.3 mi

Measured length

53 ft max depth
Public access

See the measurements Directions Where to stay

Portage Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 52.7 ft. Surface area: 1528 acres.

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Portage Lake is a 1,528-acre lake in Cass County, Minnesota with a maximum depth of 53 feet. Limited fish-species data available. Public access is available with 2 public boat landings.

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

What Portage Lake is good for

From access and monitoring records, not editorial picks.

Boat launch2 documented ramps
Deep water52.7 ft surveyed max depth
Big water1,528 acres

Swimming conditions

No reading

Not rated

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

Whether Portage 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 Portage Lake

These are the measurements Minnesota PCA publishes for Portage 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 Portage Lake

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

Lake Details

Max depth

52.7 ft

Surface area

1,528 acres

Shoreline

8.3 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

Portage LakePublic
Iowana Beach ResortSemi-private

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

Stays via Stay22

Stays near Portage Lake

Compare lakeside cabins, hotels, and vacation rentals near Portage 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 Portage Lake

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Fishing Portage Lake

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

Nearby Lakes in Cass County

Portage Lake7.5 ft clear · Mesotrophic1.6 miView →Little Portage Lake2.2 miView →Ten Lake3.5 miView →Lake Winnibigoshish12.1 ft clear · Mesotrophic3.5 miView →Hole-in-Bog Lake4.1 miView →Grass Lake5.3 miView →

Frequently asked questions about Portage Lake

Where is Portage Lake?: Portage 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 Portage Lake?: Portage Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 52.7 ft. Surface area: 1528 acres.
Is Portage Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Portage Lake?: Portage Lake has a maximum depth of 52.7 feet. The lake covers 1528 acres.
Are there boat ramps on Portage Lake?: Portage Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Portage Lake, Iowana Beach Resort. Public access is listed as yes.
Can I fish at Portage Lake?: Portage Lake has 2 documented boat landings 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.