TY - GEN
T1 - Modeling sediment transport in the pantano wash, Tucson
AU - Hummel, Ryan
AU - Duan, Jennifer G.
PY - 2011
Y1 - 2011
N2 - Hydrodynamic and sediment transport models are useful engineering tools for predicting flood flow. Many models such as HEC-RAS, HEC-6, IALLUVIAL, and GSTARS were developed for perennial rivers, and may not be suitable to ephemeral rivers in arid and semi-arid regions. This report outlines a study that examined the applicability of HEC-RAS 4.1 model in simulating flood flow and sediment transport in dryland streams in the state of Arizona. The objective is to determine if HEC-RAS model, especially the newly developed sediment transport model, is accurate in predicting erosion and sedimentations. The method of model verification and validation will guide other sediment modeling projects in other streams including the Salt River and the Verde River and their tributaries in Arizona, as well as the ephemeral rivers of Pima County. This study also examined various sediment transport formulas and recommended Yang's or Ackers-White's equations are the most appropriate formulas for sediment transport analysis in this region. Based on this study, we expect that the sediment transport analysis for dryland streams will be performed by using Yang's or Ackers-White's equations in HEC-RAS 4.1 model.
AB - Hydrodynamic and sediment transport models are useful engineering tools for predicting flood flow. Many models such as HEC-RAS, HEC-6, IALLUVIAL, and GSTARS were developed for perennial rivers, and may not be suitable to ephemeral rivers in arid and semi-arid regions. This report outlines a study that examined the applicability of HEC-RAS 4.1 model in simulating flood flow and sediment transport in dryland streams in the state of Arizona. The objective is to determine if HEC-RAS model, especially the newly developed sediment transport model, is accurate in predicting erosion and sedimentations. The method of model verification and validation will guide other sediment modeling projects in other streams including the Salt River and the Verde River and their tributaries in Arizona, as well as the ephemeral rivers of Pima County. This study also examined various sediment transport formulas and recommended Yang's or Ackers-White's equations are the most appropriate formulas for sediment transport analysis in this region. Based on this study, we expect that the sediment transport analysis for dryland streams will be performed by using Yang's or Ackers-White's equations in HEC-RAS 4.1 model.
KW - Floods
KW - Hydrodynamics
KW - Sediment transport
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U2 - 10.1061/41173(414)441
DO - 10.1061/41173(414)441
M3 - Conference contribution
AN - SCOPUS:79960403513
SN - 9780784411735
T3 - World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability - Proceedings of the 2011 World Environmental and Water Resources Congress
SP - 4246
EP - 4254
BT - World Environmental and Water Resources Congress 2011
T2 - World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability
Y2 - 22 May 2011 through 26 May 2011
ER -