St. Croix River Fish Species

Target Species and Seasonality in Western Wisconsin

Western Wisconsin’s river systems are a premier destination for anglers seeking variety and high-caliber action. From the St. Croix River to the Flambeau and Sioux Rivers, our waters are teeming with prized game fish that respond to various techniques throughout the year. At Upriver Anglers, we specialize in targeting these species when they are at their most active. Whether you are looking for the aggressive fight of a smallmouth bass, the power of a trophy muskie, or the delicate presentation required for wild trout, our guided floats are timed to put you in the center of the action.

Prime Seasonal Windows for Wisconsin River Species

Understanding the biological clock of these rivers is the key to a successful outing. Smallmouth bass fishing in the St. Croix and Red Cedar Rivers is legendary, with the peak season running from the June opener through September, when water temperatures support intense topwater and streamer activity. For those chasing the "fish of ten thousand casts," the best time to catch muskie on the Flambeau River is during the autumn transition in October and November. Additionally, the Sioux River offers exceptional seasonal runs of steelhead and trout, while the Chippewa River provides consistent walleye and pike opportunities from spring through late fall. Don't wait for the season to pass you by—now is the best time to book a trip for your target species.

Frequently Asked Questions About Our Target Species

What is the best time of year to fish the St. Croix River?

For Smallmouth Bass fishing in the St. Croix River, the most productive window is between June and September. During these months, the fish are aggressively feeding in shallower structure, making them perfect targets for fly fishing poppers and sub-surface streamers. If you are targeting Northern Pike, late spring and early fall offer the best temperature gradients for active predators.

What is the best technique for catching Flambeau River Muskie?

The best muskie fishing on the Flambeau River often involves using large, high-profile flies or bucktails that trigger a predatory response. In the fall, we focus on deep pools and current breaks where these giants hold before winter. Nick will guide you through the "figure-eight" technique at the side of the raft, which is essential for enticing follows into strikes.

When is the Sioux River trout and steelhead season?

The Sioux River is a gem for trout anglers, with the most active periods aligning with the spring steelhead runs in April and the general trout season opener in May. Clear water conditions require a stealthy approach and light tippets. We recommend booking these trips early, as the prime water conditions for these sensitive species can be short-lived.

What are the best baits for Red Cedar River smallmouth?

On the Red Cedar River, smallmouth bass are highly responsive to crayfish and baitfish imitations. When fly fishing, we find great success with weighted Clouser Minnows and Hellgrammite patterns. For conventional anglers, tube jigs and soft plastics worked slowly along rocky bottoms are the top producers.

How do I book a trip to target specific fish with Upriver Anglers?

To target a specific species like the Flambeau River Muskie or St. Croix Smallmouth, simply visit our booking page or contact Nick Thill directly. We can help you choose the best date based on real-time river conditions and seasonal peaks. Secure your preferred dates today and let’s get you on the water!