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442 E Richardson Springs Road

3 2.0   Sf: 1882   Yr: 1987  Acres: 0.200

Welcome to your own private oasis! This charming 3 BR, 2 Bath home on 70' of Rock River frontage, is the ultimate retreat. Host gatherings on your expansive composite deck, complete w/ outdoor...

W9595 Lake Drive

5 2.0   Sf: 1608 Acres: 0.140

Welcome to your dream lakefront getaway--a perfect blend of comfort, natural beauty, nautical charm. Whether you're seeking peaceful solitude or a place to host unforgettable milestone celebrations...

N799 Waubunsee Trail 1

2 3.0   Sf: 2296   Yr: 1996 

Make your dream a reality! With breathtaking sunsets over Lake Koshkonong and just a stone's throw from a pristine golf course, this spacious condominium offers the ultimate in serenety. Surrounded...

103 Lake Court

3 2.0   Sf: 1494   Yr: 2025  Acres: 0.150

Brand-new construction in a serene lakeside neighborhood on Lake Koshkonong! This modern yet cozy home sits proudly on a corner lot and offers incredible lake views from a spacious wraparound...

395 E Ellendale Road

2 2.0   Sf: 1008   Yr: 1986  Acres: 0.200

Year Round Rock River Property Available! 75 ft of Rock River frontage with easy access to Lake Koshkonong. Updates include a new roof, gutters and gutter guards in May 2025. Furnace and central air...

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W8738 White Crow Road

2 1.0   Sf: 1150   Yr: 1915  Acres: 1.000

Nestled in a serene, park-like setting beneath a canopy of majestic 200-year old trees, adorable 2-Bed, 1-Bath lake cottage offers the perfect blend of rustic charm and lakeside tranquility. Steps...

149 Oakwood Avenue

3 2.0   Sf: 2636   Yr: 1940  Acres: 1.610

Escape the hustle and come home to your own private paradise. Set on 1.61 acres beside Lake Koshkonong, this 3-bed, 2-bath home blends comfort, nature, and convenience. Ideally located between the...

11526 N Indian Summer Drive

4 2.0   Sf: 2050   Yr: 2025  Acres: 0.190

This open & airy tri-level feat. open great room concept + a lg. family room, 3 bdrms on UL & 4th in LL perfect for office/den. Spacious kitchen feat. quality cabinets & quartz tops perfect for...

Indian Summer Estates

1729 E Road 5

2 2.0   Sf: 1344   Yr: 1960  Acres: 0.140

NEW NEW NEW! This stunning home has been fully transformed with nearly every inch updated--brand new walls, fresh paint, new flooring throughout, modern doors, stylish light fixtures, a brand new...

Lot 60 Lakeside Drive

Acres: 2.070

One of the few lots left on Lake Koshkonong for you to build the lake property of your dreams! 2.07 acres of land with about 100' of water frontage. In area of nice homes. Located next to association...

Bayview Estates

1750 E Rd 2

3 1.0 Acres: 0.220

Year-round cottage-style home with a water view of Lake Koshkonong, located in the desirable Mallwood Estates Improvement Association. Enjoy access to the association's beach, playground, pier, and...

10980 N Reed

Acres: 0.220

Your opportunity to have 20' of deeded access at the end of Reed Rd, on Rock River that leads to Lake Koshkonong. Per Rock County, the house needs to be torn down and cannot be rebuilt. Buyer assumes...

11647 N Maple Beach Drive

4 3.0   Sf: 2704   Yr: 1989  Acres: 0.370

The best of both worlds! Either enjoy this great place to get away from it all or just live here all year! Fantastic views of Lake Koshkonong overlooking private Maple Beach Park. Large 4-bedroom...

Lake Koshkonong photo

Lake Koshkonong Information

Lake Koshkonong is a large glacial lake located in southeastern Wisconsin, primarily in Jefferson County. It covers approximately 3,200 acres and has a maximum depth of about 10 feet. The lake is fed by the Rock River and is a popular destination for recreational activities, including fishing and boating. Lake Koshkonong is a 10460 acres lake in three counties. Wisconsin's third largest lake!
10,640 acres. Doorway to Wisconsin's vacationland. Only 1.5 hr from Chicago, this beautiful recreational lake is known for fishing, boating, water sports. Prefect getaway. Still affordable lakefront and deeded lake access properties available. Year round recreational area.

Fishing

Lake Koshkonong is known for its diverse fish populations, making it a popular spot for anglers. Common species found in the lake include:

- Walleye
- Northern Pike
- Largemouth Bass
- Bluegill
- Crappie
- Channel Catfish

Fishing is allowed year-round, with specific regulations depending on the species and season. Anglers are advised to check Wisconsin's Department of Natural Resources (DNR) regulations for limits, sizes, and specific season dates. The lake's shallow waters make it particularly good for panfish and bass, especially in the spring and summer months.

Boating

Lake Koshkonong is also a favorite for boaters. The lake's relatively shallow depth makes it suitable for various types of recreational boats, including:

- Pontoon boats
- Fishing boats
- Kayaks and canoes
- Jet skis

Boating regulations on the lake include the need for appropriate safety equipment (like life jackets) and adherence to speed limits in certain areas to ensure safe navigation. There may be public boat landing sites available for putting in and taking out watercraft.

Amenities and Accessibility

- Public Access: There are public boat launches available, making it easy to access the lake.
- Camping: Nearby campgrounds and parks may offer camping facilities for a more extended stay.
- Wildlife Viewing: The area surrounding Lake Koshkonong is home to a variety of wildlife, making it a great spot for birdwatching and other nature-related activities.

Local Attractions

In addition to fishing and boating, the area around Lake Koshkonong offers various attractions, including:

- Hiking and biking trails
- Local parks
- Dining and shopping in nearby towns (such as Fort Atkinson and Jefferson)

Whether you’re interested in fishing, boating, or simply enjoying the natural beauty of Wisconsin, Lake Koshkonong offers various opportunities for outdoor recreation. Always check current conditions and regulations before heading out, as they can change seasonally.

If you're interested in specific real estate options, amenities, or activities around the lake, feel free to ask a Lake Real Estate Specialist!

Are Jet Skis permitted on Lake Koshkonong? Yes
Can you Swim in Lake Koshkonong? Yes
What is the Water Quality at Lake Koshkonong? Average
What is the Average water level variance at Lake Koshkonong? 7 ft.
Are Boat Docks permitted at Lake Koshkonong? Yes
Are Power Boats permitted at Lake Koshkonong? Yes
What is the Lake Depth at Lake Koshkonong? Max 7' feet
What are the Nearby Cities to Lake Koshkonong? Edgerton, WI (1 mile); Milton, WI (5 miles); Chicago, IL (1 1/2 - 2 hours)
What is the Closest Airport to Lake Koshkonong? Rock County Airport in Janesville, Dane County Airport in Madison (30 miles)
What are the Building restrictions at Lake Koshkonong? Permit Required