Berry Falls NPS photo. Big Cedar Falls NPS photo. Waterfalls occur where streams flowing into the Niobrara run over the erosion-resistant Rosebud formation. Over 230 waterfalls occur along the westernmost part of the Niobrara, including the state's highest—Smith Falls, which plunges approximately 63 feet before flowing several hundred yards into the river. Some waterfalls trickle playfully into the river, while others are found on tributary streams hidden within shady side canyons.
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