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

How deep is Hahns Lake?

Hahns Lake has a maximum depth of 10 feet and an average depth of 2 feet. The lake covers 72 acres.

Hahns Lake

Jefferson County, Wisconsin72 acresView map Directions

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

Max depth

10 ft

Bathymetric survey

Area

72 acres

Surface area

Shoreline

1.9 mi

Measured length

10 ft max depth

See the measurements Directions Where to stay

Hahns Lake in Jefferson County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 10 ft. Surface area: 72 acres.

Loading map…

Hahns Lake is a 72-acre lake in Jefferson County, Wisconsin with a maximum depth of 10 feet (2-foot average).

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

Swimming conditions

No reading

Not rated

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

Whether Hahns 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.

Compare swimming lakes near Madison →

Get alerts for Hahns Lake →

Water quality measurements for Hahns Lake

These are the measurements Wisconsin DNR publishes for Hahns 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 Hahns Lake

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

Lake Details

Max depth

10 ft

Average depth

2 ft

Surface area

72 acres

Shoreline

1.9 mi

Stays via Stay22

Stays near Hahns Lake

Compare lakeside cabins, hotels, and vacation rentals near Hahns Lake in Jefferson 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 Hahns 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.

Planning a whole trip? See where to stay at Wisconsin’s top lakes →

Follow Hahns Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Hahns Lake

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

Nearby Lakes in Jefferson County

Rock Lake12 ft clear · Mesotrophic8.3 miView →Mud Lake2.3 ft clear · Eutrophic9.4 miView →Bean Lake9.7 miView →Cushman Pond—View →Goose Lake11.8 miView →Hope Lake8 ft clear12.6 miView →

Frequently asked questions about Hahns Lake

Where is Hahns Lake?: Hahns Lake is a lake in Jefferson County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Hahns Lake?: Hahns Lake in Jefferson County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 10 ft. Surface area: 72 acres.
Is Hahns Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Hahns Lake?: Hahns Lake has a maximum depth of 10 feet and an average depth of 2 feet. The lake covers 72 acres.