The Iowa Geoscience Education Information Network

Explore Iowa Geology


Henry David Thoreau

Henry David Throreau

I was born upon thy bank, river,
My blood flows in thy stream,
And thou meanderest forever
At the bottom of my dream.





Videos from the field and lab

Braided River from Explore Iowa's Geology (IGEIN) on Vimeo.

By Chris Paola, St. Anthony Falls Laboratory, University of Minnesota

This movie shows a small part of experiment XES 99-1, done at the Experimental Earthscape Facility at the St. Anthony Falls Hydraulic Laboratory, University of Minnesota. The size of the basin for this experiment is 3 m wide x 6 m long. The basin floor subsides through time. A mixture of sediment and water enters from 4 input sites at the top of the frame. Autocyclic events (mostly labeled) in the movie include avulsion,
lateral sweeping, channel expansion events, bar migration, nickpoint retreat. For more
information follow links from:


Meandering River from Explore Iowa's Geology (IGEIN) on Vimeo

By. C.E. Heinzel - Senic video from the BLM Gold Bar Campsite along the Colorado River

Sediments in Action from Explore Iowa's Geology (IGEIN) on Vimeo.

Scenes from Bedload Transport of Binary Mixtures of course sand (copyright 1990 Ronald Shreve (UCLA) & Tom Drake (North Carolina State)) Produced with support from a Petroleum Research Fund Grant!

dflows_P.Heller from Explore Iowa's Geology (IGEIN) on Vimeo.

This movie is an edited version of the debris flow videotape compiled by John Costa of
the U.S.G.S. (Water Resources Division), albeit without his glorious sound track.

Reed Timmer, July 17, 2018 - Huge flash flood rips down Johnson Canyon with major debris plug from up near the Bryce Canyon area, including massive pine trees and other debris from the higher elevations. Was able to intercept this flood multiple times as it passed down the canyon.