Lake Koshkonong, Rock / Jefferson County, Wisconsin — fishing destination

Rock / Jefferson County • Southern Wisconsin

Fishing Lake Koshkonong, Wisconsin

A broad, shallow, fertile lake on the Rock River in southern Wisconsin. Lake Koshkonong is a walleye, catfish, and panfish factory whose expansive flats also produce quality largemouth bass and northern pike. Country Cave Baits injection-pours premium soft plastic baits built for the bass, panfish and walleye that call Lake Koshkonong home.

10,460 acres Max depth 7 ft Rock / Jefferson County

About Lake Koshkonong

Lake Koshkonong is located in Rock / Jefferson County in Southern Wisconsin and is one of the state's premier fishing destinations. Anglers visiting Lake Koshkonong target Walleye, Largemouth Bass, Catfish, Northern Pike, Crappie and Bluegill throughout the open-water season. Whether you're fishing from a boat or the shore, Lake Koshkonong offers diverse structure and productive water that responds well to injection-poured soft plastic baits from Country Cave Baits — made right here in Fall River, WI.

Fish Species in Lake Koshkonong

Walleye Largemouth Bass Catfish Northern Pike Crappie Bluegill

Landmarks & Points of Interest

Boat Launches & Access

Best Baits for Lake Koshkonong

Our top-recommended Country Cave Baits for fishing Lake Koshkonong in Rock / Jefferson County, Wisconsin. Each is injection-poured in Fall River, WI and shipped fresh to your door.

4 Inch Skinny Paddle Tail for fishing Lake Koshkonong, Rock / Jefferson County, Wisconsin

$5.75

Swim & thump

4 Inch Skinny Paddle Tail

A slim-profile 4-inch paddle tail that swims with a seductive kick on a steady retrieve. Perfect for swim jigs, spinnerbait trailers, or a weighted swimbait hook through grass and around docks.

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5 Inch Stick Worm for fishing Lake Koshkonong, Rock / Jefferson County, Wisconsin

$5.95

The versatile workhorse

5 Inch Stick Worm

Our 5-inch stick worm is injection-poured with a soft plastic that shimmies on the fall and drives bass wild. Perfect for wacky rigging, Texas rigging, or a weightless presentation in shallow cover.

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1.2 Inch Crappie Slayer for fishing Lake Koshkonong, Rock / Jefferson County, Wisconsin

$6.50

Slab crappie magnet

1.2 Inch Crappie Slayer

Our 1.2-inch Crappie Slayer is a micro tube designed specifically for slab crappie. The tiny ribbed body and flowing tail seduce panfish into biting when the bite is tough. Rig it on a small jig head under a float or tight-line it vertically. It's also a deadly ice fishing bait — drop it through the ice to suspended crappie and bluegill all winter long.

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4 Inch Craw for fishing Lake Koshkonong, Rock / Jefferson County, Wisconsin

$6.25

Flip, pitch & punch

4 Inch Craw

A full-bodied 4-inch craw with aggressive kicking claws that thump on the retrieve. Built thick to hold up through dozens of fish, this bait excels flipped into heavy cover or dragged on a jig head.

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