The Niangua River is widely known across the state as an excellent river for floating and smallmouth bass fishing, but the trout fishery is little known. Most area trout anglers only fish in the Niangua River's more famous tributary, Bennett Spring Branch.
Above Bennett Spring Branch, the Niangua is a typical warm-water fishery. Smallmouth bass fishing is very good, but few trout are present.
It is the cooling flows from Bennett Spring that make the river into a true trout stream. For eleven miles, the water is cool enough to hold year-round populations of rainbow and brown trout. Both species are stocked regularly.
The Niangua River isn't like other trout streams in the Ozarks. First of all, it just doesn't look like a trout stream. The river is big, and it usually isn't very clear. Also, the water temperature is often above 70 degrees in the summer. With that said, for some unknown reason, the Niangua River does fish well all summer long, even when water temperatures are quite high. It is not uncommon to catch trout when the water temperature is 75 degrees. In other words, it's hard to believe trout do well in the Niangua, but they do.
Rainbow trout are the most common catch in the Niangua. They are stocked every few weeks during the spring, summer, and fall, and a good number also escape from Bennett Spring Branch into the river. They are easy to catch on a Powerbait, worms, small spinners, and spoons. Brown trout are not quite as common, but a good number can be found in the river. They respond better to small crankbaits, nightcrawlers, minnows, and crayfish. Both species of trout can be caught on a variety of flies including Woolly Buggers, Prince Nymphs, Pheasant Tail Nymphs, and Caddis imitators.
You can access the Niangua River's trout water at three points. The first is the Bennett Spring Access, where Bennett Spring Branch meets the Niangua. This is probably the most popular access point, and fish (and fisherman) are always plentiful. The next access point is at Barclay Conservation area. This is a few miles downstream from the Bennett Spring Access. Fishing is very good in this area, especially for brown trout. The final access point is at Prosperine. Trout populations are a bit lower in this area, but you can find some of the biggest brown trout in the river both up and downstream of this access. Smallmouth bass are also abundant. Fishing regulations on the Niangua allow for all baits, lures, and flies to be used. Four trout may be kept, and there is no minimum length limit on rainbow trout. There is a 15" length limit on browns. In addition, only one brown may be kept.
No matter where you access it, the Niangua is a great stream. While it may not be wildly popular to trout fisherman, the fishing is very good. You'll see lots of floaters, especially in summertime, but fisherman will be few. This river is certainly worth a trip. If you have trouble, you can always drown your sorrows by catching a few stockers over at Bennett Springs. Bennett Spring State Park Trout Fishing