Physical Sciences and Mathematics Commons^™

Environmental Assessment Inventory And Quality Rating: Summary Report, Utah Division Of Water Resources

Elusive Documents

No abstract provided.

Bear River Investigations: Idaho, Utah, Wyoming: Summary Of Status Report, June 1970, Bureau Of Reclamation; United States

Elusive Documents

No abstract provided.

The Baker Ranch: Glen Canyon National Recreation Area: A History, Lenard E. Brown

Elusive Documents

No abstract provided.

Determination Of Hydraulic Conductivity--Capillary Pressure Relationship From Saturation--Capillary Pressure Data From Soils, Roland W. Jeppson

Reports

No abstract provided.

Formulation And Solution Of Transient Flow Of Water From An Infiltrometer Using The Kirchhoff Transformation, Roland W. Jeppson

Reports

No abstract provided.

Attitudes For Environmental Planning In The 1970'S, Dean F. Peterson

Reports

No abstract provided.

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 …

Publications Of The Utah Water Research Laboratory, Utah Water Research Laboratory

Reports

No abstract provided.

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.

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 …

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 …

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.

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 …

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 …

Final Report: Wasatch Airborne Seeding Program, Geoffrey E. Hill

Reports

No abstract provided.

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 …

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 …

Developing A Hydro-Quality Simulation Model, Neal P. Dixon, David W. Hendricks, A. Leon Huber, Jay M. Bagley

Reports

No abstract provided.

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.

Aquatic Specialists' Meeting Idaho State University, Pocatello, Idaho September 9-10, 1970, U.S. International Biological Program

Meetings

No abstract provided.

Abiotic Specialists' Meeting Tucson, Arizona March 6-7, 1970, U.S. International Biological Program

Meetings

No abstract provided.

Microbiological Specialists' Meeting New Mexico State University, Las Cruces, New Mexico April 3-4, 1970, U.S. International Biological Program

Meetings

No abstract provided.

Attendance Report: Small Mammal Workshop, Clive D. Jorgensen

Memorandum

No abstract provided.

Plant Observations In Validation Studies, David W. Goodall

Memorandum

No abstract provided.

Us/Ibp Analysis Of Ecosystems Newsletter No.1-6, Us/Ibp

Progress reports

No abstract provided.

Water Conservation : The Storage Life Of Farm Dams, D J. Carder

Journal of the Department of Agriculture, Western Australia, Series 4

HOW MANY stock can a dam of a certain size and depth be expected to carry and how long will the supply last?

What size of dam is needed in case the winter rains fail? How many stock can a dam support and still provide a drought supply?

Emergency Chlorination Of Farm Water Supplies, H C. Hughes

Journal of the Department of Agriculture, Western Australia, Series 4

TOWARDS the end of summer (and especially in a drought) the risk of water in dams, soaks, wells or tanks becoming polluted is increased.

Bore water is much less likely to be affected unless the bore is poorly sited near a farm building, such as a shearing or milking shed, a pig pen, or a septic tank system.

Dry Season In The Eastern And North-Eastern Wheatbelt, George Henry Burvill

Journal of the Department of Agriculture, Western Australia, Series 4

The drought of 1969 ended an 11-year run of good seasons in the eastern and north-eastern wheatbelt. Good years usually have above average rainfall; wheat yields and pasture growth are greatly reduced if rains are well below average. Eighty years records show that half the years must be expected to be below average and about one-third could be well below. This area produces one-third of the State's wheat and has 9 per cent, of its sheep.

Water Resources Planning Study For Arkansas And Oklahoma, L. R. Heiple, H. M. Jeffus

Technical Reports

The purpose of this study is to make an appraisal of the local water resources in the Arkansas River Basin common to the two States of Arkansas and Oklahoma as defined by the Arkansas-Oklahoma Compact Committee (hereinafter referred to as "the Compact Committee"). A review, analysis, and correlation has been made of hydrologic data previously collected by others. Consideration is given to the evaluation at selected sites of the storage and potential use of existing water sources.

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.