Lake with beach and campground

Lake Koshkonong Vacation Rentals

Lake Koshkonong

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Lake Koshkonong
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Why Rent On Lake Koshkonong

Lake Koshkonong, a sprawling 10,595-acre lake in southern Wisconsin, is a paradise for adventure seekers, wellness enthusiasts, and family travelers. With a maximum depth of just 7 feet, the lake’s shallow waters make it ideal for boating, swimming, and a variety of watersports. Anglers will find an abundance of fish species including musky, largemouth bass, and northern pike.

Surrounded by a mix of woodland, wetlands, and grasslands, the area is rich in natural beauty and historical significance. The Lake Koshkonong Effigy Mounds, near Fort Atkinson, stand as sacred historical landmarks, featuring 11 mounds built between 700 and 1100 A.D. by ancient inhabitants.

For those seeking adrenaline, the Camrock Trails offer fast and flowy mountain biking routes, while the lake itself provides ample opportunities for road cycling and gravel trail adventures. Families can enjoy water recreational activities at Lakeview Campground Beach and Lakeland Campground Beach. Nearby, the Milton House Museum and the Sterling North Home offer a glimpse into the region’s rich history. Whether you’re looking to immerse yourself in nature, explore historical sites, or simply enjoy family-friendly activities, Lake Koshkonong is a destination that promises an unforgettable experience.

Best time to go
Visit Lake Koshkonong in late summer, particularly August. The sun bathes the tranquil waters in golden hues while the gentle breeze whispers through the trees. Delve into fishing tournaments, serene kayaking, and vibrant local festivals, all enjoyed amid a backdrop of fewer tourists and fewer pesky bugs.
Water Quality
Lake Koshkonong's water exhibits a jade hue due to algae and nutrient runoff from the Rock River, resulting in murky water clarity. The lake is classified as hypereutrophic, characterized by low transparency and frequent algal blooms.
Surface area (mi)
26.1
Max depth (ft)
6.89
Elevation (ft)
774.28
Shoreline length (mi)
27

Popular activities

  • Fishing
  • Kayaking
  • Canoeing
  • Hiking
  • Boating
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Marinas on Lake Koshkonong

Nearby lakes

Frequently Asked Questions

Ready to dive into what Lake Koshkonong has to offer? Let’s tackle some of the burning questions you might have as you plan your visit!

  • No, it is not safe to swim in Lake Koshkonong. The lake has high levels of algae and nutrient runoff, leading to frequent algal blooms and the presence of harmful blue-green algae, which can be dangerous for humans and pets. Swimming is advised against in areas with visible green scum or pea soup-like conditions.

  • Lake Koshkonong is a popular destination because it offers various water activities like boating, swimming, fishing, and watersports. The lake has public boat landings and beaches, and it is home to a variety of fish species including musky, bass, and walleye. In winter, it is used for snowmobiling and ice fishing.

  • In Lake Koshkonong, Wisconsin, the minimum length limit for walleye and sauger is 18 inches, and the daily bag limit is three. This applies to both walleye and sauger, as well as their hybrids. These regulations are specific to Lake Koshkonong and differ from some statewide regulations.

  • There are no dog-friendly beaches specifically on Lake Koshkonong. However, nearby Lake Kegonsa State Park has a designated dog beach area where dogs can swim and play. This dog beach is located on the south end of the park and is fenced in with separate areas for smaller dogs.

  • Towns near Lake Koshkonong include Stoughton, Janesville, Palmyra, and Fort Atkinson. These towns are all within a 20-mile radius of the lake. Janesville and Stoughton are among the closest, situated about 16 and 15 miles away, respectively.