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- Closed conduit flow;; design;; energy dissipation;; hydraulics;; models;; open channel flow;; stilling basin (1)
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- Hydrologic models;; hydrologic simulation;; computer simulation;; simulation;; groundwater;; watershed studies;; snowmelt;; evapotranspiration;; deep percolation;; water yields;; hydrologic relationship;; hydrologic research;; hydrology;; hydrologic data;; water yield improvement;; soil moisture;; water resources planning and management;; hybrid computer (1)
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Articles 1 - 29 of 29
Full-Text Articles in Physical Sciences and Mathematics
Instrumentation And Development Of Techniques To Measure And Evaluate Meteorological Parameters Important To Hydrology, Duane G. Chadwick
Instrumentation And Development Of Techniques To Measure And Evaluate Meteorological Parameters Important To Hydrology, Duane G. Chadwick
Reports
Hydro-meteorological instrumentation concepts are discussed. The necessity for an economic and reliable telemetering system is recognized and ways are shown how to achieve this objective. Particular discussion is given on total-precipitation and water-content-of-snow sensing. A method is also presented showing how to make isohyetal plots of telemetered precipitation information on an x-y plotter by use of a resistance paper method in conjunction with an analog computer.
Preliminary Indicators Of Income/Wealth Redistribution Associated With Bureau Of Reclamation Projects, Reed Willis, Allen Lebaron, Herbert Fullerton
Preliminary Indicators Of Income/Wealth Redistribution Associated With Bureau Of Reclamation Projects, Reed Willis, Allen Lebaron, Herbert Fullerton
Reports
Social well-being is an accepted subset of water investment feasibility criteria. Our attempt is to isolate income redistribution impacts conferred by the U.S. Bureau of Reclamation projects. Four project sites have been utilized to yield both pre and post project estimates of farm income and wealth. Production functions of the Cobb-Douglas type were estimated to yield information about factor shares, and thus enable inferences to be made about distribution of total product. Lorenz curves were developed to show changes in distribution of wealth and net income in terms of family enterprise, per acre, and per irrigated acre. Listing of individual …
Hydrologic Inventory Of The Weber River Study Unit, Frank W. Haws, Roland W. Jeppson, A. Leon Huber
Hydrologic Inventory Of The Weber River Study Unit, Frank W. Haws, Roland W. Jeppson, A. Leon Huber
Reports
The 1963 Utah State Legislature authorized the Utah Water and Power Board (now the Utah Division of Water Resources) to develop a state water plan in order to give coordination and direction to the activities of all state and federal agencies concerned with Utah's water resources. To facilitate the development of this plan, a proposal was submitted through the State Planning Coordinator in the Governor's Office to the Urban Renewal Administration of the Housing and Home Finance Agency. Funding was approved effective May 19, 1966, under the Urban Planning Assistance Program authorized by Section 701 of the Housing Act of …
Closed Conduit To Open Channel Usu Stilling Basin, Gordon H. Flammer, Gaylord V. Skogerboe, Chi-Yuan Wei, Hameed Rasheed
Closed Conduit To Open Channel Usu Stilling Basin, Gordon H. Flammer, Gaylord V. Skogerboe, Chi-Yuan Wei, Hameed Rasheed
Reports
Criterion have been developed for designing a stilling basin to serve as a transition from closed conduit flow to open channel flow for a fully submerged pipe outlet. The unique feature of the stilling basin is the short-pipe energy dissipater so located and designed as to provide maximum energy dissipation for the basin configuration. The expanding characteristics of a submerged jet were used in establishing the length of the stilling basin. The unsteadiness of the water surface and the relative boil height in the model basin were used as the criteria for evaluating the effectiveness of the structure for energy …
Hydrologic Inventory Of The Uintah Study Unit, Lloyd H. Austin, Gaylord V. Skogerboe
Hydrologic Inventory Of The Uintah Study Unit, Lloyd H. Austin, Gaylord V. Skogerboe
Reports
The 1963 Utah State Legislature authorized the Utah Water and Power Board (now the Utah Division of Water Resources) to develop a state water plan in order to give coordination and direction to the activities of all state and federal agencies concerned with Utah's water resources. To facilitate the development of this plan, a proposal was submitted through the State Planning Coordinator in the Governor's Office to the Urban Renewal Administration of the Housing and Home Finance Agency. Funding was approved effective May 19, 1966, under the Urban Planning Assistance Program authorized by Section 701 of the Housing Act of …
Determination Of Hydraulic Conductivity--Capillary Pressure Relationship From Saturation--Capillary Pressure Data From Soils, Roland W. Jeppson
Determination Of Hydraulic Conductivity--Capillary Pressure Relationship From Saturation--Capillary Pressure Data From Soils, Roland W. Jeppson
Reports
No abstract provided.
Computer Simulation Of The Hydrologic-Salinity Flow System Within The Upper Colorado River Basin, M. Leon Hyatt, J. Paul Riley, M. Lynn Mckee, Eugene K. Israelsen
Computer Simulation Of The Hydrologic-Salinity Flow System Within The Upper Colorado River Basin, M. Leon Hyatt, J. Paul Riley, M. Lynn Mckee, Eugene K. Israelsen
Reports
Changes in the hydrologic equilibrium of a river basin resulting from resource development also produce changes in the quality pattern. Since the burden of quality maintenance must be shared by users (just as are quantities) predictions are needed for quality changes which might result from contemplated development at any specified location within the river system. This study reports the development of a computer simulation model of the water and salt flow systems within the Upper Colorado River basin. Because of the close relationship between the hydrologic and salinity flow systems, an understanding of the hydrologic system is essential to successful …
A Thermodynamic Analysis Of A Primary Waste Stabilization Pond, David W. Hendricks
A Thermodynamic Analysis Of A Primary Waste Stabilization Pond, David W. Hendricks
Reports
Traditional design practice for waste stabilization ponds is based upon the premise that sufficient photosynthetic oxygen must be produced within the pond to satisfy oxygen requirements of the incoming waste flow. Thus, because algae production is proportional to pond surface area, surface organic loading rate is a principal design criterion (hydraulic detention time is the other) . That a possible adverse energy trade exists in the sequence of coupled reactions (aerobic waste degradation-photosynthesis) has been largely ignored. This work is focused on quantitatively articulating this energy trade, in terms of algae produced vis a vis waste degraded. This is done …
A Theoretical Study Of Infiltration Into Range And Forest Soils, Joel E. Fletcher, Yehia Z. El-Shafei
A Theoretical Study Of Infiltration Into Range And Forest Soils, Joel E. Fletcher, Yehia Z. El-Shafei
Reports
More than 400 rainfall simulator experiments were examined to detect which soil properties could be used to computer infiltration time relationships. Three theoretical equations were tested to determine their efficacy for calculating infiltration time relationships from soil and site characteristics. It was shown that both the modified Green and Ampt and Fletcher equations could by successfully used. Darcian type equations were developed on laboratory type samples which would show the relations between soil, solution and rainfall properties and infiltration. These latter equations have not been tested on undisturbed soils but give excellent agreement between measured and computed values for time …
Hydrograph Synthesis For Watershed Subzones From Measured Urban Parameters, Joseph B. Evelyn, V. V. Dhruva Narayana, J. Paul Riley, Eugene K. Israelsen
Hydrograph Synthesis For Watershed Subzones From Measured Urban Parameters, Joseph B. Evelyn, V. V. Dhruva Narayana, J. Paul Riley, Eugene K. Israelsen
Reports
An analog computer program was developed to simulate the outflow hydrographs at four locations within the 38th Street Waller Creek urban watershed at Austin, Texas. Actual outflow was gaged at the final outlet of the watershed. This provided a checkpoint for comparing the simulated and observed final outflow hydrographs. The outflow hydrographs for each subzone were obtained by chronologically abstracting interception, infiltration, and depression storage from their precipitation hyetographs. These outflow hydrographs were then routed through Waller Creek channel to obtain the hydrographs at the four desired locations. The advantages of this model are the flexibility in varying the precipitation …
Solution To Transient Vertical Moisture Movement Based Upon Saturation--Capillary Pressure Data And Modified Burdine Theory, Roland W. Jeppson
Solution To Transient Vertical Moisture Movement Based Upon Saturation--Capillary Pressure Data And Modified Burdine Theory, Roland W. Jeppson
Reports
Using finite differences and the Crank-Nicholson implicit scheme for solving parabolic type partial differential equations, a computer program has been developed for solving the one-dimensional, vertical movement of water in soils. The formulation of the initial boundary value problem is obtained by introducing a new dependent variable through the Kirchoff transformation to replace the hydraulic head. Data relating saturation (or moisture content) to the capillary pressure in the soil are used to define the hydraulilc properties of the soil which are needed in order to obtain a solution. The Burdine Theory has been implemented in the program to obtain the …
Transient Flow Of Water From Infiltrometers--Formulation Of Mathematical Model And Preliminary Numerical Solutions And Analyses Of Results, Roland W. Jeppson
Transient Flow Of Water From Infiltrometers--Formulation Of Mathematical Model And Preliminary Numerical Solutions And Analyses Of Results, Roland W. Jeppson
Reports
The partial differential equation initial-boundary value problems which describe the three-dimensional axisymmetric flow of water from an infiltrometer through partially saturated soil are solved by finite differences using the alternating direction implicit method. Pertinent features which describe the flow characteristics obtained from 34 solutions for varying initial conditions and for 12 soil types are summarized in tables and figures. Relationships between such features as depth of penetration and lateral movement of the wetting front and rate of application and initial hydraulic head or tension in the soil are developed for several of these soils types from analyses of the results.
Subcritical Flow At Open Channel Structures Open Channel Expansions, Lloyd H. Austin, Gaylord V. Skogerboe, Ray S. Bennett
Subcritical Flow At Open Channel Structures Open Channel Expansions, Lloyd H. Austin, Gaylord V. Skogerboe, Ray S. Bennett
Reports
Analyzing the hydraulics of open channel constrictions has been modified to allow the analysis of energy loss in open channel expansions. The modified technique has been compared with previous methods of analysis using data collected in the laboratory on open channel expansions with vertical walls, and triangular-shaped baffles. Also, a design procedure for such baffled outlet structures has been developed.
Water Management Research In Arid And Sub-Humid Lands Of The Less Developed Countries: Second Annual Progress Report, Utah Water Research Laboratory
Water Management Research In Arid And Sub-Humid Lands Of The Less Developed Countries: Second Annual Progress Report, Utah Water Research Laboratory
Reports
No abstract provided.
Computer Simulation Of Water Resource Systems At Utah State University, J. Paul Riley
Computer Simulation Of Water Resource Systems At Utah State University, J. Paul Riley
Reports
Introduction: The problems of managing water-resource systems are basically those of decision making based upon a consideration of the physical, economic, and sociological processes involved. These processes are strongly interrelated and constitute a dynamic and continuous system. Any combination of these interrelated and numerous system variables yields a management solution. At Utah State University the problem of investigating system response to various possible management alternatives is being approached by hybrid computer simulation. The concept of simulation is fundamentally simple. Basically, it is a technique of analysis whereby a model is developed for investigating the behavior or performance of a dynamic …
An Examination Of Approximately Simultaneous Salt Lake Valley And Cache Valley Clearing (Ventilation) Indexes, George W. Reynolds, William Mcneill, Floyd Johnson, Janet Cleary
An Examination Of Approximately Simultaneous Salt Lake Valley And Cache Valley Clearing (Ventilation) Indexes, George W. Reynolds, William Mcneill, Floyd Johnson, Janet Cleary
Reports
The Clearing Index is a numerical estimate of the contamination dispersal capability of the atmosphere. Between July, 1969, and June, 1970, 192 rawinsonde flights were made in the Cache Valley at approximately the same time as officially scheduled flights at the Salt Lake City Weather Bureau Airport Station. Clearing Indexes were computed from various combinations of Salt Lake Valley and Cache Valley rawinsonde and maximum surface temperature data. These were examined from the viewpoint of recommending a standard procedure for providing Clearing Indexes on a daily basis for Intermountain valleys. The primary conclusions were that: 1. Actual Salt Lake Valley …
Statistical Relationships Between Storm And Urban Watershed Characteristics, V. V. Dhruva Narayana, M. Akbar Sial, J. Paul Riley, Eugene K. Israelsen
Statistical Relationships Between Storm And Urban Watershed Characteristics, V. V. Dhruva Narayana, M. Akbar Sial, J. Paul Riley, Eugene K. Israelsen
Reports
Because of the rapid urban development in recent years, hydrologic problems associated with urban watersheds have gained importance. Large sums of money are being spent for the design of urban drainage systems based upon inadequate procedures for predicting peak runoff rates. In this report a procedure is proposed for predicting peak runoff rates from small urban and rural watersheds based upon measurable storm and watersheds characteristics. The technique was tested for a number of runoff events on the Boneyard Creek watershed at Urbana, Illinois, and the results of this test are included. The procedure will be particularly useful for estimating …
Optimizing Conjunctive Use Of Groundwater And Surface Water, James H. Milligan, Calvin G. Clyde
Optimizing Conjunctive Use Of Groundwater And Surface Water, James H. Milligan, Calvin G. Clyde
Reports
Mathematical models for groundwater and surface-water systems are formulated and solved on a digital computer using linear programming for optimizing the water use of the system. Post-optimal analysis, including sensitivity analysis of the objective function coefficients and right-hand side terms, is also applied to the models. The models which are developed include a general deterministic model, a general stochastic model in which hydrologic inputs are allowed to be probabilistic, and models of two simple, but real, river basins. The advantages of linear programming analysis are demonstrated by the computer solutions which can be obtained by this method of optimization. The …
Publications Of The Utah Water Research Laboratory, Utah Water Research Laboratory
Publications Of The Utah Water Research Laboratory, Utah Water Research Laboratory
Reports
No abstract provided.
The Function Of Social Behavior In Water Resource Development , Wade H. Andrews, Dennis C. Geertsen
The Function Of Social Behavior In Water Resource Development , Wade H. Andrews, Dennis C. Geertsen
Reports
Preface: This report is an analysis of a social survey of the middle and lower Bear River Basin of southeastern Idaho and northern Utah concerning the problem of water resource development in a semiarid region of the Western United States. The survey part of the study, carried out in the summer of 1966, dealt with both general social factors and a specific proposal made by the Bureau of Reclamation for developing water resources of the Bear River. In many respects this proposal and the resulting behavior is typical of other western river basin projects, in some other ways, however, it …
Subcritical Flow At Open Channel Structures Bridge Constructions, Gaylord V. Skogerboe, Lloyd H. Austin, Kuan-Tao Chang
Subcritical Flow At Open Channel Structures Bridge Constructions, Gaylord V. Skogerboe, Lloyd H. Austin, Kuan-Tao Chang
Reports
The techniques previously employed by the writers for describing subcritical flow at open channel constrictions have been found valid for analyzing nonuniform flow in open channels. Combining the nonuniform flow analysis with the submerged flow ratings for various bridge geometrics has provided an analytical means for determining the backwater due to the bridge constrictions under “abnormal stage – discharge” conditions.
Systems Analysis Of Hydrologic Problems, J. Paul Riley, Diana Averett
Systems Analysis Of Hydrologic Problems, J. Paul Riley, Diana Averett
Reports
Introduction: Increasing national and international interest in water resources in recent years has stimulated much new activity and progress in hydrology. It is now generally recognized that the science of hydrology is basic to an understanding of water resources problems and to planning for water resources development. Accompanying this demand upon the science of hydrology is an urgent need for improved education at the university level. In resopnse to this need for improved education, the First International Seminar for Hydrology Professors was held at Urbana, Illinois, in July 1969. The Second International Seminar was held at Logan, Utah, during August …
Formulation And Solution Of Transient Flow Of Water From An Infiltrometer Using The Kirchhoff Transformation, Roland W. Jeppson
Formulation And Solution Of Transient Flow Of Water From An Infiltrometer Using The Kirchhoff Transformation, Roland W. Jeppson
Reports
No abstract provided.
Bacterial Absorption On Soils--Thermodynamics, David W. Hendricks, Frederick J. Post, Deorao R. Khairnar, Jerome J. Jurinak
Bacterial Absorption On Soils--Thermodynamics, David W. Hendricks, Frederick J. Post, Deorao R. Khairnar, Jerome J. Jurinak
Reports
Laboratory studies on the adsorption of bacteria onto soils and activated carbon were undertaken to evaluate the role of the process in removal of bacteria from groundwater. It was hypothesized that removal of bacteria from water passing through soil would be primarily due to adsorption in which case the bacteria would behave in a manner similar to colloidal particles or chemical molecules. The basic kinetics of uptake of Staphylococcus aureus were determined on activated carbon, a highly adsorbing material chemically speaking. Once the technique was worked out and adsorption demonstrated to take place, sand, clay, and Mendon silt loam were …
Developing A Hydro-Quality Simulation Model, Neal P. Dixon, David W. Hendricks, A. Leon Huber, Jay M. Bagley
Developing A Hydro-Quality Simulation Model, Neal P. Dixon, David W. Hendricks, A. Leon Huber, Jay M. Bagley
Reports
No abstract provided.
A Hydrologic Model Of The Bear River Basin, Robert W. Hill, Eugene K. Israelsen, A. Leon Huber, J. Paul Riley
A Hydrologic Model Of The Bear River Basin, Robert W. Hill, Eugene K. Israelsen, A. Leon Huber, J. Paul Riley
Reports
As demands upon available water supplies increase, there is an accompanying increase in the need to assess downstream consequences resulting from changes at specific locations within a hydrologic system. The problem is approached in this study by hybrid computer simulation of the hydrologic system. Modeling concepts are based upon the development of basic relationships which describe the various hydrologic processes. Within a system these relationships are linked by the continuity-of-mass priciple which requires a hydrologic balance at all points. Spatial resolution is achieved by considering the modeled areas as a series of subbasins. The time increment adopted for the model …
Final Report: Wasatch Airborne Seeding Program, Geoffrey E. Hill
Final Report: Wasatch Airborne Seeding Program, Geoffrey E. Hill
Reports
No abstract provided.
Attitudes For Environmental Planning In The 1970'S, Dean F. Peterson
Attitudes For Environmental Planning In The 1970'S, Dean F. Peterson
Reports
No abstract provided.
Progress Report On Studies Of Hydraulic Geometry Of Large Bed Element Streams, Dean F. Peterson
Progress Report On Studies Of Hydraulic Geometry Of Large Bed Element Streams, Dean F. Peterson
Reports
This study developed a general method for estimating runoff rates and associated confidence limits of a given recurrence interval for ungaged small urban watersheds. The utility of the method developed was demonstrated through its application to a southeast region of Texas. Some 200 historical rainfall-runoff events from 40 watersheds in the Houston, Austin, Dallas, and Fort Worth urban areas were analyzed. Watershed data such as drainage area, percent of urbanized area channel length, average channel slope, land slope, and soil type are documented. Total rainfall amounts, intensities, durations, and mass-time distributions were determined for each storm and used to develop …