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Influence of hydropower outflow characteristics affecting riverbank stability: The lower Osage River case (Missouri, USA)

June 12, 2020

This research examined the influences of outflow characteristics affecting riverbank stability. The 130 km stretch of the lower Osage River downstream from Bagnell Dam (Missouri, USA) provided an excellent case study for this purpose. The integrated BSTEM model with the HEC-RAS model was accurately calibrated and validated with data from the U.S. Geological Survey (USGS). Then, the outflow characteristics (peak flow duration, flow drawdown rate, and low flow duration) were investigated individually. The results of this study showed that: 1) Riverbank stability is little affected by the duration time of the peak flow, especially on the reaches far from the dam. 2) Sudden flow drawdown significantly reduces riverbank stability. However, the impact of the drawdown rate decreases with distance from the dam. 3) The duration of the low flow after peak flow influences the riverbank stability value proportional to the distance from the dam. The time of low flow before failure increases as the distance from the dam increases.

Citation Information

Publication Year 2020
Title Influence of hydropower outflow characteristics affecting riverbank stability: The lower Osage River case (Missouri, USA)
DOI 10.1080/02626667.2020.1772974
Authors Wesam Mohammed-Ali, Cesar Mendoza, Robert R. Holmes
Publication Type Article
Publication Subtype Journal Article
Series Title Hydrological Sciences Journal
Series Number
Index ID 70210999
Record Source USGS Publications Warehouse
USGS Organization WMA - Earth System Processes Division

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