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Computations of High-Velocity Flows on Alluvial Fans
The results of numerical models of supercritical flows on alluvial fans demonstrate the strong effect fan topography has on flow velocity and depth. Particularly important are transverse...

Initiation of Density Currents in Diverging Channels: Comparison of Field and Laboratory Data
The transition from free surface channel flow to a submerged density current has been investigated in the laboratory. A set of field data has been collected at a wastewater effluent site....

An Alternate Theory of Density Current Propagation
Density current propagation has been previously analyzed by employing a one-dimensional momentum balance in a frame of reference moving with the density current head. Experimental data...

Interfacial Instabilities Associated with Density Currents
Three-dimensional behavior of density currents flowing down a sloping surface has been analytically and experimentally investigated. Attention has been given to the presence of interfacial...

An Inline Retarding Basin
This paper discusses the idea of retarding flows within existing right-of-way in a linear basin. This concept is based on longitudinally dividing the right-of-way into two sections. The...

Features of Flow in Slurry-Thickening Ponds
The study reported was undertaken to investigate the physical processes which come into play in settling-pond slurry thickeners and causes their behavior to deviate from those included...

Microstructure of Cohesive Sediment Suspensions
In a shear flow field suspended fine sediments under relatively low concentrations and stable stratification conditions develop a step-wise profile. This is due to internal wave instability...

Near-Bed Sediment Concentration in Non-Uniform Flows Over Gravel Beds
The calculation of near-bed sediment concentration is formulated in terms of equations governing the dispersion of heavy particles in non-uniform turbulent shear flows over stable gravel...

Analytical and Numerical Modeling at High Sediment Concentrations
Methods for classifying sediment-water mixtures according to material concentration and rheologic properties are discussed. Results from laboratory and field measurements show that bed...

Analysis of Progressive Development on Alluvial Fans
Flow on alluvial fans is considered to be somewhat unpredictable and complex, experiencing high velocities, avulsions, erosion, and deposition causing a dynamic topography with flooding...

Scodie Canyon Flash Floods of 1984
This paper describes a unique thunderstorm and flood which occurred in Kern County, California in 1984. It describes the follow-up studies and method of implementation of building restrictions...

Alluvial Fan Flooding and Development Alternatives
The Federal Emergency Management Agency (FEMA) utilizes a methodology which examines the probability of an incised channel forming at any given location across the fan, in consideration...

Entrainment of Bed Sediment by Density Underflows
The erosion caused by a density-driven underflow has been studied experimentally. The observations indicate that a strong density current can entrain substantial amounts of bed sediment....

Comparison of Vertical Velocity Measurements in the Great Lakes Connecting Channels with Theoretical Profiles
Vertical distribution of velocities was measured with an upward looking acoustic Doppler current profiler in the upper St. Clair River during November 1984 - April 1986 and the Detroit...

Little Dry Creek Channel Improvements Provide Flood Control and Revitalization for Englewood, Colorado
A multi-purpose, off-stream storage facility located at the upstream end of the project provides 85 acre-feet of flood storage during the 100-year storm and provides athletic fields during...

Ultimate Sediment Concentration
The sediment rating curve is used to relate sediment discharge to water discharge, under steady equilibrium flow conditions. The slope of the sediment rating curve is a measure of the...

Sediment Discharge Measurement with a Point Sampler
A procedure for measuring total sediment discharge using point-source suspended-sediment data was developed. The proposed procedure, Total Sediment Discharge (TSD), was tested with field...

Effectiveness of Spur Dike Notching
The most widely used technique of ameliorating the environmental effects of river-training works has been to construct notches in spur dikes (or to allow notches to remain in damaged dikes)...

Kinematics and Dynamics of Overland Flow
C. Y. Guo combined the kinematic wave approximation with Horton's infiltration formula to analytically solve the propagation of a two-dimensional overland flow on a previous...

Model-Prototype Study of Overland Flow
Similarity of overland flow hydrographs was investigated. Similarity ratios based on Froude number modeling were tested by using: 1) computed hydrographs by kinematic wave equations, 2)...

 

 

 

 

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