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Complex channel responses to changes in stream flow and sediment supply on the lower Duchesne River, Utah

Citation

Gaeuman, David, Schmidt, John C, and Wilcock, Peter R, Complex channel responses to changes in stream flow and sediment supply on the lower Duchesne River, Utah: .

Summary

Channel responses to flow depletions in the lower Duchesne River over the past 100 years have been highly complex and variable in space and time. In general, sand-bed reaches adjusted to all perturbations with bed-level changes, whereas the gravel-bed reaches adjusted primarily through width changes. Gravel-bed reaches aggraded only when gravel was supplied to the channel through local bank erosion and degraded only during extreme flood events. A 50% reduction in stream flow and an increase in fine sediment supply to the study area occurred in the first third of the 20th century. The gravel-bed reach responded primarily with channel narrowing, whereas bed aggradation and four large-scale avulsions occurred in the sand-bed reaches. [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 07:58:02 MDT 2012

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Title Citation Complex channel responses to changes in stream flow and sediment supply on the lower Duchesne River, Utah

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