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Kent, Edward
In order to perform conservative scour analyses for coastal bridge sites it is necessary to develop realistic hydraulic simulations which provide worst case estimates of depth and velocity....

Bridge Pier Scour Equations - An Assessment
A comparative assessment of various bridge pier scour equations has been reported on the basis of analyzing a set of published prototype data from Indian rivers and other countries covering...

On the Erodibility of Rock and Other Earth Materials
An outline of a new method to determine the erodibility of rock and other earth and engineered earth material is presented. The method quantifies the relative capacity of the boundary...

Effect of Pier Geometry on Scour in Graded Gravels
This paper summarizes the results of laboratory tests performed on clear water scour around circular and rectangular cross section bridge piers, embedded in a non-uniform coarse sediment...

Density-dependent Circulation in Desert-basin Aquifers with Isotropic Self-Similar Permeability Distributions
Closed-basin aquifers, typical of mountain chains in the western United States, present a central ephemeral lake (called `playa') where evaporation increases the local brine density creating...

Reservoir Operation by the Use of an Expert System
Most reservoirs, designed for the purpose of flood control, face operational problems during periods of drought. This study uses five indicators, streamflow, precipitation, temperature,...

Scada System Requirements for Optimum Pumping
In order to minimize the cost of electric energy for pumping water through its distribution system, a computer program was developed to schedule the operation at eight pumping stations...

Effects on River Mechanics Due to Reduction in Low-Season Discharge
India's diversion of water from the Ganges River 11 miles upstream from Bangladesh's western border during the low-flow season seriously adversely affects Bangladesh's irrigated agriculture,...

Farakka Barrage - It's Impacts and Possible Mitigation
The paper discusses the impacts and possible implications of the Farraka Barrage Project across the Ganges River on different sectors in Bangladesh including hydrology and river morphology,...

Integrated Planning for International River Basin
The integrated development of the Vardar/Axios Basin includes a system of projects scheduled to meet the needs and aspirations of Yugoslavia (in particular, the former Socialist Republic...

A Two-Dimensional Contaminant Transport Model with High-Resolution Upwind Schemes
High-resolution upwind schemes have become popular techniques to solve multidimensional transport problems. Based on the finite volume method (FVM), two-dimensional horizontal hydrodynamic...

Hydrodynamic Modeling of San Diego Bay
A two-dimensional vertically-averaged finite element model was adapted to study the hydrodynamics of San Diego Bay. The hydrodynamic model was interfaced with pre- and post-processors...

Transport Process of Surface Liquid Spills
A mathematical model simulating the scenarios of surface liquid spills is presented in this paper. This model describes the advance front and recession curves of surface spills based on...

An Integrated Shell (ROSS3) for Transport Modeling, Visualization, and Data Management
A model shell (ROSS3) which does visualization, data management, and modeling transport of oil and chemical spills in inland waters all within a single integrated unit is presented. Numerous...

Near Field Behavior of a Far Field Circulation Model
Output from the 3-D far field circulation model ECOMsi was compared with output from EPA initial mixing models in two simulations of coastal sewage outfalls - an idealization with steady...

Reconstruction of Concentration Boundary Condition for Unsteady Pesticide Transport Modeling
A one-dimensional unsteady contaminant transport model which used an unsteady hydraulic field was used to model pesticides (metolachlor, metribuzin) in the Iowa River/Coralville Reservoir....

Contaminant Fate and Transport Model in Pool-and-Riffle Streams
The complex nature of solute transport and transformation processes in natural streams has been investigated using numerical solution of a proposed mathematical model. This model is based...

A model to describe the fate of agricultural pollutants
The distributed parameter hydrological model CEQUEAU is coupled to nitrogen and pesticide sub-models to study agricultural non-point pollution at the watershed level. This developing tool...

Lake Michigan Diversion at Chicago
Water has been diverted from Lake Michigan to the Mississippi River basin beginning with the construction of the Illinois and Michigan Canal in 1848 to serve navigation needs. During the...

Benefits of Hazard Mitigation Planning to Reduce Shoreline Impacts Due to Great Lakes Water Level Management Fluctuations and Severe Storms
Recent experience with flood hazard mitigation planning that encompassed aspects of pre-disaster preparedness and recovery operations have proven to be an effective tool in geographic...

 

 

 

 

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