• The Niobrara National Scenic river comes alive with color in the fall.

    Niobrara

    National Scenic River Nebraska

Hydrology

Surge flow

Surge Flow Waves

NPS photo

A unique feature of the Niobrara is a phenomenon known as surge flow. The river's combination of velocity, gradient, and sediment load cause the formation of sand ridges that result in short-term standing waves. Click for the bulletin on surge flow. You will need Acrobat Reader to open this file.



Surge flow is recorded at one other National Park Service site; Great Sand Dunes National Park and Preserve, in Colorado.

Did You Know?

Ice cliffs form when groundwater seeps from cliff faces and freezes

During the cold winter months when temperatures drop well below zero degrees F the Niobrara River freezes over in most places. Tall ice cliffs form on river bluffs and attract ice climbers to the Niobrara National Scenic River. More...