James River Deep Through Disposal Study
2006
Evans, Jr, Robert A.
Several dredged material disposal alternatives are being investigated by the U.S. Army Engineer District, Norfolk, for the Lower James River. One alternative is to dispose of the material in the deep trough at the entrance of the James River. Evaluation of this alternative is difficult due to the three- dimensional (3-D) nature of currents in the James River entrance. In order for deep trough disposal to be feasible, the disposed material must stay in place and not be redistributed elsewhere in the system. The model RMA-10 was used to simulate the 3-D hydrodynamics of the Lower James River. Currents and tides were compared to physical model data to validate the numerical model. In order to determine if disposed material would stay in place, the shear stress at the bottom was calculated using the model water velocities and sediment grain sizes. Dredge disposal, James River, Numerical hydrodynamic modeling, RMA-10, Sedimentation, Three-dimensional numerical hydrodynamic modeling
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