The falls are on a short spring-fed stream that plunges into a small canyon on the south side of the Niobrara. The canyon at the foot of the falls is home to an endemic hybrid of quaking aspen, Populus tremuloides, and big-toothed aspen, P. grandidentata. Smith Falls is the only place where the ranges of these two trees overlap.
Landmarks in Nebraska | Geography of Nebraska | Nebraska state parks | Waterfalls of the United States
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