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...
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...
Selenium: Essential Nutrient or Toxic Threat?
The essential nutrient selenium is believed responsible for numerous deformities, reproductive failures, and deaths of migratory birds at Kesterson Reservoir in the San Joaquin Valley,...
Steady State Fluid Transport Model for Plants
Knowledge of water potentials throughout the xylem and phloem elements as well as in individual cells is fundamental for understanding effects of water and temperature stress on transport...
California's Dam Safety Program?The Development of Hydrology for Dams (
California's water code provides for supervision of dams and reservoirs with regard to protection of life and property. This code is administered by the Department of Water...
LFRD Bridge Design as Viewed by the Designer
The load and resistance factor design (LFRD) design concept has been resisted by some bridge engineers on the grounds that it represents a reduction of the 'factor of safety'...
Evaluation of Corroded Steel Bridges
In the United States there is a large inventory of corroded steel bridges. The evaluation of these existing bridges is difficult when considering all the uncertainties involved in deterioration....
Safety of Long Span Highway Bridges Based on Dynamic Response
This paper consists of an analytical study regarding the dynamic response of highway bridges subjected to heavy vehicle loads, with emphasis on long span low fundamental frequency bridges....
Design Rainfall for Pennsylvania
The most commonly used source of rainfall estimates is the U. S. Weather Bureau Technical Paper 40. A more detailed study of Pennsylvania storms was conducted in 1970 under the sponsorship...
The Northwest Watershed Research Center, 1959-86
Hydrologic research has been conducted on the Reynolds Creek Experimental Watershed by the Agricultural Research Service for nearly 27 years. Some noteworthy instrumentation, developed...
Transport Model for Aquifer Reclamation Management
A contaminant transport model which is specifically designed for management applications is developed. A key feature is the transient velocity field needed in the solution of the advection-dispersion...
Modeling Coal Pile Leachate - A Case Study
Ground water transport of coal leachate from an existing unlined coal storage pile was modeled using the USGS 'Computer Model of Two-Dimensional Solute Transport and Dispersion...
Overview--Committee Report on Dam Safety Guidelines
In November 1984 the Surface Water Hydrology Committee appointed a task committee with the assignment to suggest standards for the hydrologic safety design of dams. The committee report...
Criteria for Spillway Design Floods
The procedures outlined in this paper only address the hydrologic safety criteria for spillway design floods. The recommended procedures are based on a careful identification of the social,...
Indemnification Costs in the Dam Safety Decision
The ASCE Task Committee on Spillway Design Floods has proposed safety criteria for three categories of dams. Category 1 dams are those with anticipated failure consequences so large and...
Safety Design Flood for Too Wide Creek Dam
This paper presents an example application of the procedure developed by the ASCE Task Committee on Spillway Design Floods for a dam on the Too Wide Creek. The example was developed from...
Analysis of Drought Indicators
The Pennsylvania Department of Environmental Resources currently monitors five parameters in its regional water supply management program. These are: (1) accumulated precipitation deficit;...
Criteria for Selecting a Reservoir Routing Method
Results of an investigation comparing dynamic and storage reservoir routing applied in dam safety analyses are presented. Outflow hydrographs computed by these reservoir routing methods...
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