Finding muskies in large rivers in the late fall through the early winter means finding slackwater spots that offer good cover options. The fish will not be holding in heavy current.

Slackwater spots on the big rivers are often formed both below and above sand or gravel bars at feeder stream junctures that wash out into the river during high water. Downstream areas often feature an eddy, a backwash where the current actually reserves. The physical nature of many of these rock bars allows them to function like miniature dams, slowing the water above them as well.

Islands also can provide significant current deflection. Be sure to check out the downriver areas of islands. Shallow flats often form below such a place, so there may not be adequate depth for winter muskies. But they are always worth investigating.

Where I come from, sections of big rivers found in developed areas have what we call "city structure." This includes pilings used for securing barges. Bridge piers also fall into this category. Check out the down-current side of such structures. Also, be on the lookout for backwaters areas carved out of the original riverbank to create boat basins for industry or pleasure boaters.

One of the top big river spots is actually a combination big river-small river thing. On semi-impounded rivers, such as those impacted by navigational lock-dam systems, slow current backwaters are often found at the mouths of feeder creeks and rivers. These places have all the necessary ingredients to draw in muskies. They tend to be loaded with baitfish.

Since current levels are low, muskies can escape the heavy flow of the river by sliding up in the creek mouth. Walleyes also can be found in these spots. If a place is known as a good walleye producer during the winter months, chances are very good it will hold muskies, too.

Water levels are especially important on large rivers. Whereas on a smaller river you can thoroughly cover a spot, on large rivers this may not always be the case, especially when the river level is low or normal. Under high water conditions, however, slackwater areas are much more condensed, making the fish tightly concentrated.

My best winter fishing for muskies occurs when the river is running high and stained. You'll find walleyes, sauger and muskies all packed in the same relatively small areas. Higher water also makes it less likely for a river to freeze, extending the fishing opportunity.

Lures mentioned for small river muskies also are effective on large rivers.

I would add to the list a bait that has been productive for me the past winter, Bait Rigs' Esox Cobra Tail.

This lure can be jigged along the bottom or worked as a swimbait. Last season, I had my best success swimming the bait in a stop-and-go fashion. One-half, three-quarter and one-ounce versions are available in several color patterns. The saltwater version of the Rapala X-Rap twitchbait was also a good producer for me last winter.

Some big river spots can be worked from the bank, particularly when the water is high and fish tend to be pushed toward the stillwater close to shore. Other spots require a boat to fish effectively.

Keep in mind that the water is dangerously cold now, and that safety is the first consideration.