Where is Lake Redstone?

Lake Redstone 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 Lake Redstone?

Lake Redstone has a maximum depth of 36 feet and an average depth of 14 feet. The lake covers 605 acres.

Are there boat ramps on Lake Redstone?

Lake Redstone has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Section 11 Road. Public access is listed as yes.

Can I fish at Lake Redstone?

Lake Redstone 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.

Lake Redstone

Sauk County, Wisconsin605 acresView map Directions

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

Max depth

36 ft

Bathymetric survey

Area

605 acres

Surface area

Shoreline

17.4 mi

Measured length

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

See the measurements Directions Where to stay

Lake Redstone in Sauk County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 36 ft. Surface area: 605 acres.

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Lake Redstone is a 605-acre lake in Sauk County, Wisconsin with a maximum depth of 36 feet (14-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 Lake Redstone is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water36 ft surveyed max depth

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Lake Redstone is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Lake Redstone 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 Lake Redstone

These are the measurements Wisconsin DNR publishes for Lake Redstone, 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 Redstone

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

Lake Details

Max depth

36 ft

Average depth

14 ft

Surface area

605 acres

Shoreline

17.4 mi

Public access

Yes

Listed by Wisconsin DNR

Recreation & Access

Boat Landings

Yes

Public Access

Section 11 RoadPublic

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 Redstone

Compare lakeside cabins, hotels, and vacation rentals near Lake Redstone 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 Lake Redstone

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Fishing Lake Redstone

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

EPA Impairment Status

Lake Redstone is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Aquatic life, Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit WI10002733 · Official waterbody report

Nearby Lakes in Sauk County

Lake Redstone2 ft clear · Eutrophic0.7 miView →Dutch Hollow Lake15 ft clear · Oligotrophic4.9 miView →White Mound Lake5.5 ft clear · Eutrophic—View →Mirror Lake13.3 miView →Mirror Lake4.6 ft clear · Eutrophic13.8 miView →Buckhorn Lake14.5 miView →

Frequently asked questions about Lake Redstone

Where is Lake Redstone?: Lake Redstone 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 Lake Redstone?: Lake Redstone in Sauk County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 36 ft. Surface area: 605 acres.
Is Lake Redstone safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Redstone is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Lake Redstone?: Lake Redstone has a maximum depth of 36 feet and an average depth of 14 feet. The lake covers 605 acres.
Are there boat ramps on Lake Redstone?: Lake Redstone has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Section 11 Road. Public access is listed as yes.
Can I fish at Lake Redstone?: Lake Redstone 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.