Instrumentation Needs and Possibilities: A Dialogue Between Suppliers and Users
The present symposium includes a panel discussion to address and illuminate needs and possibilities in hydraulic instrumentation. The panel discussion is organized with the intent of promoting...
Practical Method for Scour Prediction at Bridge Piers
A practical method is presented for prediction of local scour at bridge piers which is based on a comparison of many well known equations and supported by field data. This equation includes...
Effects of Flow Duration on Local Scour at Bridge Piers in New York
The relation of local scour to the duration of high flows and other hydraulic properties is being studied at 31 bridge sites in New York State. Clear-water scour is common at most of the...
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....
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...
Expert Analysis in Regulated Irrigation Canal Modelling
Application of riverine unsteady-flow numerical modelling techniques to problems of flow regulation in irrigation canals invokes the need for careful treatment of some situations not commonly...
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,...
Impacts of Low Flows on the Alluvial Rivers of the Southwest Region of Bangladesh
The Ganges River, which flows out of China through Nepal and India and finally into Bangladesh, has been subjected to continuous scrutiny as conflicts regarding the diversion of water...
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...
The Regulation of Lake Ontario During the Spring of 1993; a Period of Record Supplies
A wet summer in 1992 and record water supplies to Lake Ontario during early 1993 resulted in very high levels on the lake. Actions by the International St. Lawrence River Board of Control...
Estimation of Field Site Flow Parameters
The paper reports on the use of Kriging to obtain estimates of hydraulic conductivity underneath a rapid infiltration site. The parameters obtained were used in a two-dimensional groundwater...
Nonlinearity and Free-Surface Flow
The Dupuit-Forchheimer (D-F) assumption is commonly considered a viable design criterion for water resources projects and, consequently, Darcy law is used to determine the locus of free...
Combination of an Automated Channel Network Extracting System and a Distributed Watershed Model in Estimation Rainfall-Runoff Processes
Due to the improvement of accuracy and availability of Digital Elevation Models (DEMs), hydrologic researches which utilize DEMs have gradually reached sound results. In this paper, we...
Probable Maximum Flood Estimation for New and Existing Dams
Although various attempts have been made to streamline the procedures to determine PMF hydrographs for the design of new and rehabilitation of existing dams, there still remains a great...
Long Term Predictability of River Stages under ENSO Influence
The paper explores the bases for alternative approaches to river flow and hydrologic time series forecasting. The precipitation that forces river flow contains significant modes of variability...
HEC River Analysis System (HEC-RAS)
The Hydrologic Engineering Center (HEC) is developing next generation software for one-dimensional river hydraulics. The HEC-RAS River Analysis System (HEC, 1994) is intended to be the...
Modeling of Maximum Velocity in Open-Channel Flow
A great deal of information about an open channel flow is contained in the maximum velocity, which, along with the entropy parameter, can determine the mean velocity. Therefore, the maximum...
Estimation of Spillway Free Jet Trajectory Lengths
The design of high head spillways with flip bucket terminal structures must include analysis of the length of the free jet issuing from the spillway. Prototype jet trajectory lengths are...
Design Considerations for Use of Wedge Wire Screens at Surface Water Intake Structures
This paper provides the suggested guidelines for design, construction, operation and maintenance of wedge-shaped wire cylindrical screens used for aquatic biota and trash and debris screening...
Verification of Lake Superior Outflow Equations
The outflow from Lake Superior, the largest volume freshwater lake in the world, is regulated by the International Lake Superior Board of Control in accordance with the Treaty of 1909...
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