Effects of Reservoir Regulation on Channel Morphology
A case study is presented in which such a multidisciplinary approach was used to evaluate the impacts of regulated outflows from the recently completed Warm Springs Dam Project (Sonoma...
Two-Dimensional Groundwater Transport Subgrids in a 3-D Flow Model
The USGS Modular 3-D Finite Difference Ground-Water Flow Model by McDonald and Harbaugh (MODULAR) simulates ground-water flow in three dimensions by breaking the modeled region into several...
On the Selection of Sediment Transport Equations
Existing sediment transport relationships have been calibrated under a certain range of experimental conditions which can be described by the dimensionless grain size, the mobility number,...
Calculating Runaway Pressure Surges in Small Hydro Units
Determination of the runaway speed and concomitant pressure surges requires consideration of both the turbine rotodynamics and the waterhammer equations. In this paper a simplified method...
Depleted Uranium Migration in Stream Bedload Environment
The objective of this paper is to present results of a comprehensive hydrologic transport study, designed to assess potential surface water contamination, resulting from the release of...
Methods for Specification and Verification of Hydraulic Design in a Turnkey Construction Contract
The project site is at the Hannibal Locks and Dam at New Martinsville, West Virginia. The existing project, a Corps of Engineers' (Corps) facility built in the 60's...
Analysis of Estuarine Tracer-Gas Transport and Desorption
The riverine tracer-gas technique provides a direct, reach-averaged measure of gas exchange, is fairly simple to implement, and is widely accepted for determining reaeration-rate coefficients...
Effect of Streamflow Conditions on Gas-Transfer Coefficients
Contrary to the findings of previous studies of channel-controlled stream reaches, it was found that, in four reaches of a small stream characterized by a series of pools and riffles,...
Loss of Aquatic Habitat in Quincy Bay
Quincy Bay is a backwater area along the upper Mississippi River near Quincy, Illinois. The construction in 1969 of a small boat access channel about 3. 2 km upstream of the natural bay...
Response of a Lake Outlet Channel to Dredging
Channel improvements were completed in 1982 along approximately 8 miles of the Little Tallahatchie River just downstream of Sardis Dam. Heavy rains shortly after completion of the improvement...
Development of a Monitoring Program and Vegetative Restoration Project in a Mississippi River Bendway
The Dry Bayou-Thompson Bend area is located on the right descending bank of the Mississippi River between river miles 4. 5 (7. 2 kilometers) and 30. 0 (48. 3 kilometers) above the confluence...
Modification of Meander Pattern Using Wing Dams
A sharp river bend and a highway bridge together create potentially hazardous conditions for all down-bound barge tows on the Mississippi River at Lansing, Iowa. The tendency of the river...
Stream Width Adjustment to Upstream Loading
Channel width adjustments takes place either by fluvial erosion or accretion of the banks, or by their mass failure under gravity and subsequent removal of the slump debris. Simulation...
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...
Riverine 2D Random Walk Transport Model
A random walk transport model was developed to avoid the amplitude and phase errors inherent in finite difference models. A three-point probability distribution was used for the random...
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...
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...
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...
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