Large Woody Debris in the Cedar River between Cedar Falls and Landsburg Diversion Dam

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Large woody debris (LWD) performs a number of important functions in the rivers of our region. As large trees fall into rivers from the adjoining riparian areas, they can promote beneficial sorting and storing of gravels important for salmon spawning. These trees can also promote the formation of pools that provide high quality rearing habitat for young fish and holding areas for migrating adult fish. The trees themselves provide areas of cover where fish can find refuge from predators. The riparian forests along the "middle" Cedar River between Cedar Falls and Landsburg are in the process of recovery from extensive logging during the early 20th century. Many areas are becoming mature and have started to contribute LWD to the channel. The recruitment of suitably sized pieces to LWD to the river channel is expected to increase over time.

 

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