Trees shade the stream from the sun's rays and therefore its photosynthetic production is low. Coniferous trees along the waterway include western red cedar, western hemlock, Douglas fir and grand fir. The cedars are usually set back from the channel by a few meters. Red alder is common both on the banks of the stream and in the immediate area. Its leaves do not change color until they have fallen off the tree.
Some alders have their roots immersed in the stream even when it is at low levels.
Black cottonwood ranks among the tallest deciduous trees in the riparian ecosystem. Other deciduous species include paper birch as well as bigleaf and vine maple. Sword and wood ferns are quite abundant. Holly is scattered with some shrubs being a couple meters high and thick. Woolly panic-grass was seen in damp areas.