Where is Lake Onamia?

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

How deep is Lake Onamia?

Lake Onamia has a maximum depth of 13.1 feet. The lake covers 1069 acres.

Are there boat ramps on Lake Onamia?

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

Can I fish at Lake Onamia?

Lake Onamia 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.

Lake Onamia

Mille Lacs County, Minnesota1,069 acresView map Directions

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

Max depth

13.1 ft

Bathymetric survey

Area

1,069 acres

Surface area

Shoreline

13.9 mi

Measured length

13 ft max depth
Public access

See the measurements Directions Where to stay

Lake Onamia in Mille Lacs County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 13.1 ft. Surface area: 1069 acres.

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Lake Onamia is a 1,069-acre lake in Mille Lacs 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 Lake Onamia is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Big water1,069 acres

Swimming conditions

No reading

Not rated

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

Whether Lake Onamia 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 Lake Onamia

These are the measurements Minnesota PCA publishes for Lake Onamia, 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 Lake Onamia

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

Lake Details

Max depth

13.1 ft

Surface area

1,069 acres

Shoreline

13.9 mi

Public access

Yes

Listed by Minnesota PCA

Recreation & Access

Boat Landings

Yes

Public Access

Onamia 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 Lake Onamia

Compare lakeside cabins, hotels, and vacation rentals near Lake Onamia in Mille Lacs 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 Lake Onamia

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

Nearby Lakes in Mille Lacs County

Outlet of Onamia Lake on the Rum RiverOligotrophic0.9 miView →Warren Lake1.5 miView →Shakopee Lake2.7 miView →Black Bass Lake3.3 miView →Outlet of Ogechie Lake on the Rum RiverOligotrophic5.8 miView →Ogechie Lake6.4 miView →

Frequently asked questions about Lake Onamia

Where is Lake Onamia?: Lake Onamia is a lake in Mille Lacs County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Lake Onamia?: Lake Onamia in Mille Lacs County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 13.1 ft. Surface area: 1069 acres.
Is Lake Onamia safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Onamia?: Lake Onamia has a maximum depth of 13.1 feet. The lake covers 1069 acres.
Are there boat ramps on Lake Onamia?: Lake Onamia has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Onamia Lake. Public access is listed as yes.
Can I fish at Lake Onamia?: Lake Onamia 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.