Where is McGrath Lake?

McGrath Lake is a lake in Oneida County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.

How deep is McGrath Lake?

McGrath Lake has a maximum depth of 25.6 feet. The lake covers 51 acres.

Are there boat ramps on McGrath Lake?

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

Can I fish at McGrath Lake?

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

McGrath Lake

Oneida County, Wisconsin51 acresView map Directions

No nutrient or algae sampling on record from Wisconsin DNR for this lake.

Max depth

25.6 ft

Bathymetric survey

Area

51 acres

Surface area

Shoreline

1.7 mi

Measured length

Impaired · Mercury
26 ft max depth
Public access

See the measurements Directions Where to stay

McGrath Lake in Oneida County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 25.6 ft. Surface area: 51 acres.

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McGrath Lake is a 51-acre lake in Oneida County, Wisconsin with a maximum depth of 26 feet. Limited fish-species data available. Public access is available with 1 public boat landing.

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

What McGrath 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. McGrath Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.

Whether McGrath Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for McGrath Lake

These are the measurements Wisconsin DNR publishes for McGrath 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 McGrath Lake

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

Lake Details

Max depth

25.6 ft

Surface area

51 acres

Shoreline

1.7 mi

Public access

Yes

Listed by Wisconsin DNR

Recreation & Access

Boat Landings

Yes

Public Access

McGrath 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 McGrath Lake

Compare lakeside cabins, hotels, and vacation rentals near McGrath Lake in Oneida County, Wisconsin — 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 McGrath Lake

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Fishing McGrath Lake

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

EPA Impairment Status

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

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

Source: EPA ATTAINS assessment unit WI10026824 · Official waterbody report

Nearby Lakes in Oneida County

Little Tomahawk Lake0.5 miView →Mud Lake0.7 miView →Big Carr Lake13 ft clear0.8 miView →Bird Lake17 ft clear1 miView →Little Carr Lake12 ft clear1.5 miView →South Two Lakes1.7 miView →

Frequently asked questions about McGrath Lake

Where is McGrath Lake?: McGrath Lake is a lake in Oneida County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of McGrath Lake?: McGrath Lake in Oneida County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 25.6 ft. Surface area: 51 acres.
Is McGrath Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. McGrath Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is McGrath Lake?: McGrath Lake has a maximum depth of 25.6 feet. The lake covers 51 acres.
Are there boat ramps on McGrath Lake?: McGrath Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include McGrath Lake. Public access is listed as yes.
Can I fish at McGrath Lake?: McGrath 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 Wisconsin's fish and wildlife agency, so check its current regulations before you go.