Effects of Flaming Gorge Dam hydropower operations on downstream flow, stage, and sediment transport

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Description

Hydropower operations at Flaming Gorge Dam, located on the Green River in Utah, can produce rapid downstream changes in flow and stage. These changes can in turn affect sediment transport and ecologic resources below the dam. To evaluate these effects, four hydropower operational scenarios with varying degrees of hydropower-release fluctuations were examined. This study demonstrates that the combined use of river-flow routing, water-surface profile, and sediment-transport models can provide useful information for evaluating the potential impacts of hydropower-operations on ecological and other resources downstream of the dam. Study results show that flow fluctuations may or may not persist for a ... continued below

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22 p.

Creation Information

Yin, S.C.L.; Tomasko, D.; Cho, H.E.; Williams, G.; McCoy, J. & Palmer, C. November 1, 1996.

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Description

Hydropower operations at Flaming Gorge Dam, located on the Green River in Utah, can produce rapid downstream changes in flow and stage. These changes can in turn affect sediment transport and ecologic resources below the dam. To evaluate these effects, four hydropower operational scenarios with varying degrees of hydropower-release fluctuations were examined. This study demonstrates that the combined use of river-flow routing, water-surface profile, and sediment-transport models can provide useful information for evaluating the potential impacts of hydropower-operations on ecological and other resources downstream of the dam. Study results show that flow fluctuations may or may not persist for a long distance, depending on the initial magnitude of fluctuation and the duration of hydropower peaking. Stage fluctuations depend not only on flow fluctuations but also on river channel characteristics, such as channel width and longitudinal slope.

Physical Description

22 p.

Notes

OSTI as DE97000547

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  • Other Information: PBD: [1996]

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  • Other: DE97000547
  • Report No.: ANL/EA/PP--83550
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/405153 | External Link
  • Office of Scientific & Technical Information Report Number: 405153
  • Archival Resource Key: ark:/67531/metadc683280

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Creation Date

  • November 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 12:23 p.m.

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Yin, S.C.L.; Tomasko, D.; Cho, H.E.; Williams, G.; McCoy, J. & Palmer, C. Effects of Flaming Gorge Dam hydropower operations on downstream flow, stage, and sediment transport, report, November 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc683280/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.