HR: 1330h
AN: H52A-1169    [PDF]
TI: Channel Morphology and Sediment Transport Associated with St. John's Dam Removal
AU: * Cheng, F
EM: cheng.206@osu.edu
AF: Department of Civil and Environmental Engineering and Geodetic Science, The Ohio State University, 470 Hitchcock Hall 2070 Neil Avenue, Columbus, OH 43210 United States
AU: Granata, T
EM: granata.6@osu.edu
AF: Department of Civil and Environmental Engineering and Geodetic Science, The Ohio State University, 470 Hitchcock Hall 2070 Neil Avenue, Columbus, OH 43210 United States
AB: Dam removal has caught the attention of the public and water resource managers as a strategy for river restoration. Flushing of reservoir sediments downstream is one of the primary concerns associated with dam removal. Sediment release modifies downstream and upstream river morphology, and consequently influences flow, fish habitat and ecosystem processes in rivers. In order to fully understand the effects of dam removal on floodplains and channels, it is necessary to understand the associated dynamics of sediment transport. Using the most recent survey techniques, we monitorred and recorded the changes in river morphology and sediment distribution resulting from the removal of the St. Johns' dam. Traditional sediment transport models are compared to simulate the dam removal event. A two-fraction sediment transport model is tested using the real time survey data and compared with the model developed using the graded sediment module of MIKE 11 software. This research will provide a valuable reference for water resources managers and decision makers pursuing dam removal and river restoration.
DE: 1803 Anthropogenic effects
DE: 1815 Erosion and sedimentation
DE: 1824 Geomorphology (1625)
DE: 1857 Reservoirs (surface)
SC: Hydrology [H]
MN: 2003 Fall Meeting