Abstract: The analysis of a laboratory and field data set for sand-bed channels defines the characteristics of upper-regime plane bed with sediment transport. The occurrence of upper-regime plane bed relates to the laminar sublayer ...

Abstract: The effects of grid-cell size on surface runoff modeling using a distributed hydrologic model are examined. The raster-based hydrologic CASC2D model is applied to two watersheds in northern Mississippi. Observed streamflow ...

Abstract: Two modes of headcut migration are generally recognized: (1) Rotating headcuts that tend to flatten as they migrate; and (2) stepped headcuts that tend to retain nearly vertical faces. A mathematical description of the ...

Abstract: Time‐varying sediment concentration exiting a plunge pool is analyzed by considering the effect of free‐overfall jet diffusion on sediment detachment and scour. The analysis results in dimensionless relationships between ...

Abstract: Existing methods based on the diffusion theory have been extended to determine the sediment concentration distribution for large concentrations of sand. The modifications for volumetric concentrations ranging from 4 to 20% ...

Abstract: The Nakdong River Estuary Barrage (NREB) prevents salt-water intrusion but causes sedimentation problems in the Lower Nakdong River in South Korea. Its mitigation requires mechanical dredging to maintain the flood conveyance ...