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

How deep is Trego Lake?

Trego Lake has a maximum depth of 36 feet and an average depth of 11 feet. The lake covers 168 acres.

Are there campgrounds on Trego Lake?

Trego Lake has 2 public campgrounds from USGS The National Map within 5 km, including Trego Lake County Park, Trego Park. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.

Trego Lake

Washburn County, Wisconsin168 acresView map Directions

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

Max depth

36 ft

Bathymetric survey

Area

168 acres

Surface area

Shoreline

4.9 mi

Measured length

Impaired · Cause unknown
36 ft max depth

See the measurements Directions Where to stay

Trego Lake in Washburn County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 36 ft. Surface area: 168 acres.

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Trego Lake is a 168-acre lake in Washburn County, Wisconsin with a maximum depth of 36 feet (11-foot average).

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

What Trego Lake is good for

From access and monitoring records, not editorial picks.

Camping2 public campgrounds nearby
Deep water36 ft surveyed max depth

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Trego Lake is listed impaired under Clean Water Act §303(d) (IR 5R) for cause unknown. Check local advisories before you swim.

Whether Trego 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 Trego Lake

These are the measurements Wisconsin DNR publishes for Trego 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 Trego Lake

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

Lake Details

Max depth

36 ft

Average depth

11 ft

Surface area

168 acres

Shoreline

4.9 mi

Recreation & Access

Campgrounds

Public campgrounds near Trego Lake

Trego Lake County Park1.5 km
Trego Park1.6 km

Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes

Stays via Stay22

Stays near Trego Lake

Compare lakeside cabins, hotels, and vacation rentals near Trego Lake in Washburn 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 Trego Lake

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Follow Trego Lake’s readings

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Fishing Trego Lake

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

EPA Impairment Status

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

Causes of impairment

Cause unknown

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit WI10005676 · Official waterbody report

Nearby Lakes in Washburn County

Whalen Lake2.1 miView →Trego Lake3.1 miView →Little Spooner Lake4.1 miView →Spring Lake3.6 miView →Lincoln Lake3.3 miView →Spooner Lake6.5 ft clear · Mesotrophic—View →

Frequently asked questions about Trego Lake

Where is Trego Lake?: Trego Lake is a lake in Washburn County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Trego Lake?: Trego Lake in Washburn County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 36 ft. Surface area: 168 acres.
Is Trego Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Trego Lake is listed impaired under Clean Water Act §303(d) (IR 5R) for cause unknown. Check local advisories before you swim.
How deep is Trego Lake?: Trego Lake has a maximum depth of 36 feet and an average depth of 11 feet. The lake covers 168 acres.
Are there campgrounds on Trego Lake?: Trego Lake has 2 public campgrounds from USGS The National Map within 5 km, including Trego Lake County Park, Trego Park. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.