Contaminant Transport from an Array of Sources
The authors show analytic solutions to the problem of contaminant dispersion from an array of point sources in a waste disposal site. These solutions are for waste sources in a fluid-saturated...
Refined Modeling to Estimate Sediment Discharge
Numerical solution of the two-dimensional turbulent flow over a train of identical dunes is obtained with the Algebraic Stress Model for closure. The effective tractive force acting on...
Lagrangian Modeling of a Suspended-Sediment Pulse
The one-dimensional Lagrangian Transport Model (LTM) has been applied in a quasi two-dimensional manner to simulate the transport of a slug injection of microbeads in steady experimental...
Sediment Routing and Stream Bed Evolution Model
A one-dimensional numerical model developed by Borah, Alonso and Prasad is discussed, improved and tested. The model named STREAM routes graded sediments and simulates aggradation, degradation...
Computing Contaminant Transport in Unsteady Riverflow
A numerical model capable of simulating transport and dispersion of mass in an unsteady, non-uniform flow field has been developed. Model results compare quite well with existing analytical...
Versatile Methodology for Flow Depth and Velocity Modeling in Stream Aquatic Habitat Assessment
The habitat assessment methodology developed by the IFG Instream Flow Group is a useful tool for evaluating instream flow needs. The methodology for basin flow modeling developed in this...
Non-Point Source Pollution: A Diffusional Model
An analytical model was developed to describe the process by which pore water from a saturated porous media is entrained in overland flow. Obtaining a better understanding of this process...
Red River Pilot Channel Design and Development
This paper presents the design parameters for two pilot channels constructed on the Red River. The factors often associated with the development of pilot channels are identified in an...
Real Time Modeling to Meet Flow Requirements at a Fossil Steam Plant
A real time modeling system has been developed to schedule hydropower operations in order to comply with discharge permit requirements at a downstream fossil steam plant. The modeling...
Hydraulic Investigation of the Cache River Basin
To develop a comprehensive solution to the problems that exist in the basin, the Illinois State Water Survey has initiated a hydraulic study. This ongoing research includes collection...
Ackers-White Equation: Transportation by Size Fractions
The Ackers-White procedure for sediment transport has been modified to permit calculation by size fractions. The original logic has been retained, but A values for incipient motion have...
Improving Drainage with Laser Controlled Land Grading in the Red River Valley of the North
This paper evaluates a laser controlled land grading project in the Red River Valley of the North. Graded fields are compared with ungraded fields to measure changes in dryland crop yields...
Roughness Coefficients of Large Floods
Most hydraulic calculations of flow in channels and overbank areas require an evaluation of flow resistance generally expressed as Manning's roughness coefficient, n. Literature...
Diversion Structure for Peak Flow Reduction
The flood control requirements of a planned development in the City of Orange, California were such that the peak discharges ranging from an annual flood up to 25-year return period be...
Factors Influencing Conveyance Efficiency
Losses from a water distribution system are inadequately defined by reference to only the gross conveyance efficiency (Ec) of the system. The various unavoidable and avoidable losses that...
Water Rights Considerations Associated With Channel Conveyance Losses
During 1986, the Wyoming Water Research Center and the State Engineer's Office cooperatively did a study on the conveyance losses associated with a section of stream channel...
Satellite Data for Adjudications in Idaho
A succession of events following a lawsuit by a power company against the state of Idaho has led to a general adjudication for a majority of the Snake River basin in Idaho. Past adjudication...
Reservoirs Help On-Farm Operation and Automation
Reservoirs can be used to convert a less desirable set of flow rates and durations into a more desirable and flexible set of rates and durations. This will permit irrigation management...
Comparison of Surge and Continuous Flow Irrigation in California
With the closure of the Kesterson National Wildlife Refuge to drainwater disposal and the pending limits on tailwater flows to the San Joaquin River, decreasing deep percolation is of...
Tailwater Management with Surge Irrigation
Field data of surge irrigation has shown that, in the post-advance stage, there exists an optimum post-advance cycle time. Cycle time greater than or less than the optimum post-advance...
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