....................... ......Fly Fishing Yellowstone National Park
Destinations: Big Wood River, Idaho The Big Wood River is one of the State's better trout streams. It is located in the popular resort areas of Sun Valley Idaho. The stream is not far from the famous Silver Creek or the Lost River.
The Big Wood River gets its name from the big cottonwood trees that line much of its banks. This is purely a freestone stream that is totally subject to Mother Nature. Snow and rain determine the amount of water provided for the river, but she alone does not determine what remains there. Agriculture use of the water also determines just how good the fishing is.
This is primarily a rainbow trout stream although the lower sections have some brown trout. The Big Wood flows into Magic Reservoir. The thing that impresses me from being different from many freestone streams in the area is the way the water changes from fast moving pocket water with huge rocks and boulders in its headwater areas, to a more Beaverkill type of appearance with the classic pool, run and riffle type of water. The large rocks disappear as the decline of the river decreases. Cobble and small rocks form the streambed in its middle and lower sections.
This river can stay on the cold side later than one might expect. It drains some very high areas and depending on the snowpack, it may be later in the season before the water warms up enough for most hatches to begin. Looking at the water on an nice Spring day, it usually tends to look warmer than it usually actually is. You better take your thermometer if you fish it early in the season.