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A Study of a Flood Control Levee Swamp System
In an attempt to reconstruct the events of the more than 100-year 1987 New Year's Eve storm that occurred on Oahu, Hawaii, an analysis of a complicated overland flow phenomenon...

Cal Poly Model Canal
The Cal Poly Model Canal (located at the Water Delivery Facility, Irrigation Training and Research Center, California Polytechnic State University, San Luis Obispo, CA) was built to accommodate...

Modelling Automatic Upstream Control with SIMCAR
The model SIMCAR solves the gradually varied unsteady flow in a branched canal network with upstream control, with particular attention given to the simulation of the AMIL radial gates....

Field Application of Transient and Steady-State Canal Models in Thailand
A transient (unsteady) flow model for simulating the hydraulics in irrigation canal networks was developed and tested in Thailand. A steady-state hydraulic model was subsequently developed...

Future Needs for Unsteady Flow Canal Models
The ASCE task committee on 'Irrigation Canal System Hydraulic Modeling' examined a number of the computer programs available for simulating unsteady open-channel...

Hydrologic Change Caused by the Eruption of Mount St. Helens
On 18 May 1980, the eruption of Mount St. Helens created a massive landslide which covered 32 square miles and stripped all vegetation from 150 square miles. A study of changes in hydrologic...

Numerical Methods for Simulating Debris Blockage Failures and Mudflows
This paper presents the procedures and results from an investigation to evaluate the hydraulic characteristics of mudflow events resulting from hypothetical failures of a debris blockage...

Irrigation Delivery Design with Parameter and Objective Uncertainty
This paper investigates the effects of uncertainty in the design of hydraulic structures in an open-channel system for irrigation water delivery. Uncertainty due to ambiguity in the values...

Multicriterion Strategic Planning for Improved Irrigation Delivery Performance
An approach for assessing alternative strategies for improving an irrigation water delivery system in the context of multiple planning criteriais applied to the Alamosa River and La Jara...

The NPUSM (Narmada) Model for Modeling Canal Flows
The NPUSM computer program was developed for the analysis of unsteady flows in canals with various types of canal structures to evaluate the Narmada Canal system in Gujarat, India. The...

Economic Evaluation of Farning Systems to Protect Surface and Ground Water Quality
Two approaches are discussed for evaluating the economic and environmental effects of farming systems designed to protect water quality. The scenario approach evaluates specific farming...

SRFR?A Model of Surface Irrigation?Version 20
The computer program, SRFR, comprises a mathematical model of flow in furrows, basins, and borders. It is designed for systematic, repeated application in the solution of design and management...

Two-Dimensional Analysis of Furrow Infiltration
A general applicable two-dimensional unsaturated-saturated model for transient soil-water flow conditions in heteogeneous soils was developed. The water flow model was applied to simulate...

Optimization of Furrow Infiltration Parameters from Advance Times and Advance Rates
Optimal design and management of surface irrigation systems requires detailed knowledge of field-wide infiltration. Evaluating infiltration parameters is difficult due to temporal and...

Tributary Pollutant Effects in the Urban Stream Network
With considering unsteady flow and backwater effects, a linear water quality model is developed based on the finite difference approximation. The model is composed to two components which...

Forecasting Irrigation Water Supply Using a Computer Model and Remotely Sensed Snow Cover
Improved streamflow forecasting in the Sevier River Basin is one objective of the Sevier River Water Management Study. Short-term forecasts are needed for optimum operations of irrigation...

Enhanced Multi-Dimensional Modelling of Marshes and Wetlands
This paper summarizes the verification and application of a two-dimensional finite element model capable of simulating the complex circulation characteristics in marshes and wetlands for...

Common Mistakes in Model Applications
To apply models to groundwater problems, the hydrologist generally uses the following three-phased approach: (1) system conceptualization, (2) history matching (or model calibration),...

Impact of Grid Orientation on Groundwater Contaminant Transport Modeling Using the U.S.G.S. MOC Model
The U.S.G.S. method of characteristics (MOC) model was enhanced to include the input of measured contaminant concentrations, the calculation of computed and measured contaminant plume...

Pitfalls Associated with the Assumption of a Constant Partition Coefficient in Modeling Sorbing Solute Transport Through the Subsurface
This paper presents several case studies where the estimation of the adsorption coefficient, K_d, by means of the K_oc-f_oc...

 

 

 

 

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