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

How deep is Day Lake?

Day Lake has a maximum depth of 20 feet and an average depth of 7 feet. The lake covers 579 acres.

Are there campgrounds on Day Lake?

Day Lake has 1 public campground from USGS The National Map within 5 km, including Day Lake Cg. 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.

Day Lake

Ashland County, Wisconsin579 acresView map Directions

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

Max depth

20 ft

Bathymetric survey

Area

579 acres

Surface area

Shoreline

9.9 mi

Measured length

20 ft max depth

See the measurements Directions Where to stay

Day Lake in Ashland County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 20 ft. Surface area: 579 acres.

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Day Lake is a 579-acre lake in Ashland County, Wisconsin with a maximum depth of 20 feet (7-foot average).

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

What Day Lake is good for

From access and monitoring records, not editorial picks.

Camping1 public campground nearby

Swimming conditions

No reading

Not rated

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

Whether Day 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 Day Lake

These are the measurements Wisconsin DNR publishes for Day 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 Day Lake

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

Lake Details

Max depth

20 ft

Average depth

7 ft

Surface area

579 acres

Shoreline

9.9 mi

Recreation & Access

Campgrounds

Public campgrounds near Day Lake

Day Lake Cg1.0 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 Day Lake

Compare lakeside cabins, hotels, and vacation rentals near Day Lake in Ashland 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 Day 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.

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Follow Day Lake’s readings

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Fishing Day Lake

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

Nearby Lakes in Ashland County

Upper Clam Lake2 miView →Little Clam Lake2.4 miView →West Twin Lake2 miView →McLaren Lake—View →East Twin Lake2.4 miView →Dead Horse Slough—View →

Frequently asked questions about Day Lake

Where is Day Lake?: Day Lake is a lake in Ashland County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Day Lake?: Day Lake in Ashland County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 20 ft. Surface area: 579 acres.
Is Day Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Day Lake?: Day Lake has a maximum depth of 20 feet and an average depth of 7 feet. The lake covers 579 acres.
Are there campgrounds on Day Lake?: Day Lake has 1 public campground from USGS The National Map within 5 km, including Day Lake Cg. 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.