Environmental Geomorphology and Geochronology Laboratory

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The Environmental Geomorphology & Geochronology Lab is dedicated to understanding the mobilization, transport, and storage of fluvial sediment and contaminants through the environment. We investigate how modern anthropogenic changes affect sediment dynamics in our nation's rivers where small changes in river conditions can lead to significant, long-term shifts in geomorphology. 

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Publications

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Year Published: 2017

Storage filters upland suspended sediment signals delivered from watersheds

Climate change, tectonics, and humans create long- and short-term temporal variations in the supply of suspended sediment to rivers. These signals, generated in upland erosional areas, are filtered by alluvial storage before reaching the basin outlet. We quantified this filter using a random walk model driven by sediment budget data, a power-law...

Pizzuto, James E.; Keeler, Jeremy; Skalak, Katherine; Karwan, Diana
Pizzuto J., Keeler J., Skalak K., Karwan D., 2017, Storage filters upland suspended sediment signals delivered from watersheds, Geology, v. 45, no. 2, p. 151-154, https://doi.org/10.1130/G38170.1

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Year Published: 2017

Flood effects provide evidence of an alternate stable state from dam management on the Upper Missouri River

We examine how historic flooding in 2011 affected the geomorphic adjustments created by dam regulation along the approximately 120‚ÄČkm free flowing reach of the Upper Missouri River bounded upstream by the Garrison Dam (1953) and downstream by Lake Oahe Reservoir (1959) near the City of Bismarck, ND, USA. The largest flood since dam regulation...

Skalak, Katherine; Benthem, Adam J.; Hupp, Cliff R.; Schenk, Edward R.; Galloway, Joel M.; Nustad, Rochelle A.
Skalak, K., Benthem, A., Hupp, C., Schenk, E., Galloway, J., and Nustad, R. (2016) Flood Effects Provide Evidence of an Alternate Stable State from Dam Management on the Upper Missouri River. River Res. Applic., doi: 10.1002/rra.3084.

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Year Published: 2014

Geomorphic change on the Missouri River during the flood of 2011: Chapter I in 2011 Floods of the Central United States

The 2011 flood on the Missouri River was one of the largest floods since the river became regulated by a series of high dams in the mid-20th century (greater than 150,000 cubic feet per second during the peak). The flood persisted through most of the summer, eroding river banks, adding sand to sandbars, and moving the thalweg of the channel in...

Schenk, Edward R.; Skalak, Katherine J.; Benthem, Adam J.; Dietsch, Benjamin J.; Woodward, Brenda K.; Wiche, Gregg J.; Galloway, Joel M.; Nustad, Rochelle A.; Hupp, Cliff R.
Geomorphic change on the Missouri River during the flood of 2011: Chapter I in 2011 Floods of the Central United States; 2014; PP; 1798-I; 2011 Floods of the Central United States (Professional Paper 1798); Schenk, Edward R.; Skalak, Katherine J.; Benthem, Adam J.; Dietsch, Benjamin J.; Woodward, Brenda K.; Wiche, Gregg J.; Galloway, Joel M.; Nustad, Rochelle A.; Hupp, Cliff R.