Where is Mirror Lake?

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

How deep is Mirror Lake?

Mirror Lake has a maximum depth of 19 feet and an average depth of 8 feet. The lake covers 58 acres.

Are there boat ramps on Mirror Lake?

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

Can I fish at Mirror Lake?

Mirror 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.

Mirror Lake

Sauk County, Wisconsin58 acresView map Directions

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

Max depth

19 ft

Bathymetric survey

Area

58 acres

Surface area

Shoreline

1.9 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)
19 ft max depth
Public access

See the measurements Directions Where to stay

Mirror Lake in Sauk County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 19 ft. Surface area: 58 acres.

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Mirror Lake is a 58-acre lake in Sauk County, Wisconsin with a maximum depth of 19 feet (8-foot average). 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 Mirror Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Mirror Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Mirror 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 Mirror Lake

These are the measurements Wisconsin DNR publishes for Mirror 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 Mirror Lake

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

Lake Details

Max depth

19 ft

Average depth

8 ft

Surface area

58 acres

Shoreline

1.9 mi

Public access

Yes

Listed by Wisconsin DNR

Recreation & Access

Boat Landings

Yes

Public Access

DeltonPublic

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

Stays via Stay22

Stays near Mirror Lake

Compare lakeside cabins, hotels, and vacation rentals near Mirror Lake in Sauk 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 Mirror Lake

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Fishing Mirror Lake

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

EPA Impairment Status

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

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Aquatic life, Recreation.

Source: EPA ATTAINS assessment unit WI10002739 · Official waterbody report

Nearby Lakes in Sauk County

Mirror Lake4.6 ft clear · Eutrophic0.8 miView →Buckhorn Lake2.1 miView →Lake Blass2.7 miView →Lake Delton2.5 ft clear4 miView →Seeley Lake9.2 miView →Devils Lake—View →

Frequently asked questions about Mirror Lake

Where is Mirror Lake?: Mirror Lake is a lake in Sauk County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Mirror Lake?: Mirror Lake in Sauk County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 19 ft. Surface area: 58 acres.
Is Mirror Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Mirror Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Mirror Lake?: Mirror Lake has a maximum depth of 19 feet and an average depth of 8 feet. The lake covers 58 acres.
Are there boat ramps on Mirror Lake?: Mirror Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Delton. Public access is listed as yes.
Can I fish at Mirror Lake?: Mirror 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.