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Articles 1951 - 1980 of 1981
Full-Text Articles in Hydraulic Engineering
Federal And State Regulation Of Activities Affecting Water Quality, Julia B. Epley
Federal And State Regulation Of Activities Affecting Water Quality, Julia B. Epley
Western Water Law in Transition (Summer Conference, June 3-5)
54 pages.
Legal Implications Of Instream Flows And Other Nonconsumptive Uses, Steven J. Shupe
Legal Implications Of Instream Flows And Other Nonconsumptive Uses, Steven J. Shupe
Western Water Law in Transition (Summer Conference, June 3-5)
14 pages.
The Public Trust Doctrine: Conflict With Traditional Western Water Law?, Harrison C. Dunning
The Public Trust Doctrine: Conflict With Traditional Western Water Law?, Harrison C. Dunning
Western Water Law in Transition (Summer Conference, June 3-5)
24 pages.
Contains references.
Inefficiency, Waste, And Loss: Water Supplies Of The Future?, John W. Krautkraemer
Inefficiency, Waste, And Loss: Water Supplies Of The Future?, John W. Krautkraemer
Western Water Law in Transition (Summer Conference, June 3-5)
24 pages.
Contains references.
Agenda: Western Water Law In Transition, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Western Water Law In Transition, University Of Colorado Boulder. Natural Resources Law Center
Western Water Law in Transition (Summer Conference, June 3-5)
Conference organizers and/or faculty included University of Colorado School of Law professors James N. Corbridge, Jr., Lawrence J. MacDonnell, Richard B. Collins, David H. Getches and Charles F. Wilkinson.
The prior appropriation doctrine has governed the allocation and use of water in the western United States since the 1850s. The shifting nature of water demand is bringing about changes in the traditional legal system. This conference will consider the fundamental principles of the prior appropriation doctrine together with the important new developments in the law now underway throughout the West.
The Prior Appropriation System In Western Water Law: The Law Viewed Through The Example Of The Rio Grande Basin, James N. Corbridge Jr., Charles F. Wilkinson
The Prior Appropriation System In Western Water Law: The Law Viewed Through The Example Of The Rio Grande Basin, James N. Corbridge Jr., Charles F. Wilkinson
Western Water Law in Transition (Summer Conference, June 3-5)
17 pages.
Contains references.
Administering Water Rights: The Permit System, Lawrence J. Wolfe
Administering Water Rights: The Permit System, Lawrence J. Wolfe
Western Water Law in Transition (Summer Conference, June 3-5)
69 pages.
Contains references.
Administering Water Rights: The Colorado System, Raymond L. Petros
Administering Water Rights: The Colorado System, Raymond L. Petros
Western Water Law in Transition (Summer Conference, June 3-5)
140 pages (includes illustrations and maps).
Contains bibliography.
Selecting Non-Point Source Pollution Treatment Practices Using Linear Optimization, John Gardy Garland Iii
Selecting Non-Point Source Pollution Treatment Practices Using Linear Optimization, John Gardy Garland Iii
Civil & Environmental Engineering Theses & Dissertations
This paper provides a case study application of a linear optimization program as a water quality management tool. The optimization program seeks to minimize the cost of nonpoint source pollution control by selecting the best combination of pollution control management practices for Hampton, Virginia. The management practice options are grass swale roadways, porous pavers, ponds, detention basins and fertilizer management education. Management practice selection is limited by constraints on land-use and water quality. Pollutants evaluated are total nitrogen, total phosphorus, suspended solids, fecal coliforms and biochemical oxygen demand (five-day). The value in the water quality constraints for pollution loading on …
The Applicability Of Microcomputers To Local Water Management, Roderick Lee Allen
The Applicability Of Microcomputers To Local Water Management, Roderick Lee Allen
Dissertations and Theses
Historically, hydrologic models have been available only on mainframe computers and have therefore not been used by local water managers to support daily decisions. The development of the microcomputer presents an opportunity for that to change.
Mathematical models of soil moisture and river routing are selected, developed and tested for use on a microcomputer as an aid to local water management. The models are then integrated with an appropriate data base in a computer program written for a microcomputer. The result is a Decision Support System for local water managers.
In order to evaluate the feasibility of using the Decision …
Groundwater Management By Linear Programming, Seungho Song
Groundwater Management By Linear Programming, Seungho Song
Civil & Environmental Engineering Theses & Dissertations
Three hydraulic optimization models are developed. These models combine the finite difference equations of two-dimensional groundwater flow in composite aquifers with various linear programming techniques. The hydraulic submodel employed in these hydraulic optimization models is so versatile that it accounts for time varying pumpage, leaky artesian conditions, a variety of boundary conditions, induced infiltrations from streams or rivers, and conversion from artesian to water table conditions. The objective of submodel 1 is to maximize the total hydraulic head from pumping wells at the end of a study period. The objective of submodel 2 is the same as submodel 1, but …
Selection Of Sludge Conditioning Chemicals And Filter Media For Vacuum Filter Dewatering Of Sludge At The Atlantic Wastewater Treatment Plant, Douglas W. Fredericks
Selection Of Sludge Conditioning Chemicals And Filter Media For Vacuum Filter Dewatering Of Sludge At The Atlantic Wastewater Treatment Plant, Douglas W. Fredericks
Civil & Environmental Engineering Theses & Dissertations
A literature review was conducted to determine the types of vacuum filter systems available for sludge dewatering, the characteristics of wastewater sludge which are important to dewatering, and the methods of sludge conditioning for vacuum filtration which are available. Capillary suction time and Buchner funnel tests were performed to determine the dewatering characteristics of sludge conditioned with ferric chloride and lime, polymer, polymer and lime, and polymer and incinerator ash. Filter leaf tests were performed to determine filter cake release characteristics of various conditioned sludge and the performance characteristics of several filter media. It was determined that ferric chloride and …
Treatment Process Optimization At The Lee Hall Water Treatment Plant Newport News, Virginia, Marcy Granum Garnett
Treatment Process Optimization At The Lee Hall Water Treatment Plant Newport News, Virginia, Marcy Granum Garnett
Civil & Environmental Engineering Theses & Dissertations
Various methods can be used in operating a water treatment plant. It is desirable to produce good quality water as efficiently and economically as possible. This study evaluates each phase of operation at the Newport News (Lee Hall} water treatment plant for overall efficiency.
This study begins by giving a detailed description of the Lee Hall water treatment plant. The description includes sources of water, a description of each treatment process, a plan view of the treatment plant, and a flow diagram of the treatment plant.
Based on the raw water data, flow rates, and the treatment plant characteristics, the …
Evaluating The Effects Of Alum With Polyelectrolyte Coagulant Aids In Treatment Of Low Turbidity Waters, Kenneth John Stockwell
Evaluating The Effects Of Alum With Polyelectrolyte Coagulant Aids In Treatment Of Low Turbidity Waters, Kenneth John Stockwell
Civil & Environmental Engineering Theses & Dissertations
Potable water sources usually require treatment for removal of suspended organic and inorganic particles. Conventional treatment processes incorporate chemical coagulants for removal of these suspended particles. Alum is a widely used coagulant that can provide adequate removals of turbidity. However, high alum dosages are required for treatment of low turbidity waters producing a voluminous sludge that is difficult to dewater.
Recent Federal regulations have limited disposal options for chemical sludges. This has prompted a reevaluation of coagulants and their dosages with the goal of reducing the amount of sludge produced and improving the sludge handling characteristics necessary for ultimate disposal. …
Transient Two Dimensional Ground-Water Flow: A Comparison Of Computed And Analytical Results, Robert Jan Fennema
Transient Two Dimensional Ground-Water Flow: A Comparison Of Computed And Analytical Results, Robert Jan Fennema
Civil & Environmental Engineering Theses & Dissertations
The exact analytical solution of the transient-flow equation is compared with the finite difference solution. The finite difference program, written by the author, uses an iterative alternating direction implicit procedure to solve the linearized partial differential equation. A second order accurate central difference method is employed to solve the equation in two dimensions.
Variable cell spacing to divide the physical domain, a weighting factor and a time acceleration function were used to investigate rate of convergence and accuracy of the numerical solution. The exact integral solution to the one-dimensional form of the flow equation i n radial coordinates is used …
Hydraulic Analysis Of Surcharged Storm Sewer Systems, Don J. Wood, Gregory C. Heitzman
Hydraulic Analysis Of Surcharged Storm Sewer Systems, Don J. Wood, Gregory C. Heitzman
KWRRI Research Reports
Surcharge in a storm sewer system is the condition in which an entire sewer section is submerged and the pipe is flowing full under pressure. Flow in a surcharged storm sewer is essentially slowly varying unsteady pipe flow and methods for analyzing this type of flow are investigated. In this report the governing equations for unsteady fluid flow in pressurized storm sewers are presented. From these governing equations three numerical models are developed using various assumptions and simplifications. These flow models are applied to several example storm sewer systems under surcharge conditions. Plots of hydraulic grade and flow throughout the …
Bulletin 3929 - Irrigation In Western Australia, K S. Cole
Bulletin 3929 - Irrigation In Western Australia, K S. Cole
Bulletins - 3000 - 3999
Irrigation is essential in many parts of the world to produce essential food and profitable cash crops. Generally, those areas of land with less than 360 mm of rain spread over a distinct wet season of several months cannot grow crops for food or cash on rainfall alone. Then irrigation becomes necessary unless some peculiarity such as an oasis exists.
A History Of The Board Of Engineers For Rivers And Harbors, Richard G. Waugh, Judith M. Hourigan
A History Of The Board Of Engineers For Rivers And Harbors, Richard G. Waugh, Judith M. Hourigan
United States Army Corps of Engineers, Omaha District
CHAPTER I: THE BOARD IS ESTABLISHED
Theodore F. Burton • Constituting the Board
CHAPTER II: STARTING BUSINESS
First Board Members • Location • The First Reviews • Early Board Reviews • Public Hearings • Board Meetings • Expenses • Staff
CHAPTER III: THE MISSIONS OF THE BOARD
The Primary Mission • The Review Process • Assigned Missions • Planning Associates Program • Waterborne Commerce Statistics • Permanent International Association of • Navigation Congresses (PIANC) • Foreign Trade Zones • Processing Reports for State and • Washington-Level Agency Review • Former Missions • Marine Design • Transportation Economics • National Capital …
A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman
A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman
Civil & Environmental Engineering Theses & Dissertations
The environmental impact of the transport of pollutants in open channel flow has for many years been of interest due to the continuous introduction of heavy metals, pesticides, herbicides, and other foreign substances into natural waterways. In order to fully understand this transport process, it-is necessary to examine the significance of its individual components. In the present study an explicit two-dimensional finite difference model, designed to investigate the influence of suspended sediment on the pollutant transport process, is presented. Specific attention is directed toward examining the role of suspended sediment in 1) the turbulent vertical transport mechanism in a stratified …
An Engineering Solution To Improve Water Quality In A Tidal Lagoon, Richard Warren Price
An Engineering Solution To Improve Water Quality In A Tidal Lagoon, Richard Warren Price
Civil & Environmental Engineering Theses & Dissertations
Rising demand for better water quality stimulated research and development of ways to improve the quality level in existing as well as proposed water systems. At present, most of the solutions focus on biological and chemical processes.
Many natural or man-made water bodies act as receivers for both point and non-point pollution sources. Employment of biological and chemical treatment has proved successful in many of these cases; however, in some cases a more natural physical solution of an engineering mode would be more desirable. A "flushing" technique using the tidal fluctuation as a driving force has been investigated and the …
Sun, Sand And Water: A History Of The Jacksonville District U.S. Army Corps Of Engineers 1821-1975, George E. Buker
Sun, Sand And Water: A History Of The Jacksonville District U.S. Army Corps Of Engineers 1821-1975, George E. Buker
Books
A history of the Jacksonville district of the U. S. Army Corp of Engineers and their challenges to develop Jacksonville as a viable harbor and intracoastal waterways from 1821-1975
Bulletin 3933 - Trickle Irrigation For Home Gardens, K Cole
Bulletin 3933 - Trickle Irrigation For Home Gardens, K Cole
Bulletins - 3000 - 3999
The use of trickle irrigation in the home garden can save money, time and water.
Trickle irrigation is a concept first used in glasshouses in England, then applied to field crops in Israel and developed and refined in Australia and America. Today it is widely used in orchards, vineyards, vegetable gardens and now has gained wide acceptance in the growing of ornamental plants.
Any good trickle system uses small quantities of water over an extended period of time. In the home garden, flows of 2.25 litres to 4.5 litres per hour are usual though for small shrubs lesser amounts may …
Automation Of The Continuous Coagulation Monitor, Dee Mitchell, James J. Oskowis
Automation Of The Continuous Coagulation Monitor, Dee Mitchell, James J. Oskowis
Arkansas Water Resources Center Technical Reports
The development of automation in the past 50 years has paralleled the accelerating growth of today’s vast technological society. Automatic control systems are indispensable extensions of man's brain that enable him to monitor and regulate his complex environment. The principles of automatic control have a wide range of applications and interests in virtually every scientific field. The need for automatic control systems in vital applications of environmental engineering is both real and urgent. Extensive pollution has resulted in unavoidable water re-use and in the inevitable establishment of stringent effluent standards. Both water and wastewater treatment processes have necessarily become more …
0057: Addison Moffat Scott Papers, 1873-1939, Marshall University Special Collections
0057: Addison Moffat Scott Papers, 1873-1939, Marshall University Special Collections
Guides to Manuscript Collections
Charleston, West Virginia, engineer. Papers relate to the construction and improvement of navigation on the Great Kanawha River with the first system of locks and dams. Includes bid proposals and specifications for the construction of locks, dams, and buildings.
Water Conservation Handbook, D J. Carder, G. W. Spencer
Water Conservation Handbook, D J. Carder, G. W. Spencer
Natural resources published reports
This handbook is intended as a practical guide in some of the most common aspects of water conservation in the agricultural areas of Western Australia. It deals mainly with water conserved in dams for stock and domestic purposes on the farm.
the farm. The handbook does not attempt to deal with all aspects of handling and using water for agricultural purposes. This is a vast subject which extends into many fields such as engineering, irrigation and land use.
The guide does, however, touch on some important aspects of good management of agricultural land. It should be read in conjunction with …
Waterways: Comprehensive Regional Plan Series Report Four, East Central Florida Regional Planning Council
Waterways: Comprehensive Regional Plan Series Report Four, East Central Florida Regional Planning Council
City and Regional Planning -- Florida
A plan to make use of the lakes, rivers, canals, and oceans for commerce and other development
Pumping And Horsepower, R P. Harington
Pumping And Horsepower, R P. Harington
Journal of the Department of Agriculture, Western Australia, Series 4
WATER is vital to the survival of plants and animals and its availability will influence the site of the homestead and the farm layout generally.
This article describes some of the factors involved in the installation of a pumping outfit for domestic and stock requirements.
Tests Of A Suggested Piezometric Method For Determining Hydraulic Conductivity Of Saturated Soils, K. R. Channarasappa
Tests Of A Suggested Piezometric Method For Determining Hydraulic Conductivity Of Saturated Soils, K. R. Channarasappa
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
A major factor in the design of drainage systems is the hydraulic conductivity of the soil strata to be drained. Various methods for measuring the hydraulic conductivity of soils in both the field and the laboratory have been devised. In many cases, however, laboratory methods fail to give reliable data since the natural field conditions under which flow actually takes place cannot be duplicated in the laboratory. Hence a need exists for a field method for measuring hydraulic conductivity of soils in situ. When a large number of tests are to be performed in a given location, a simple, quick, …
Siphon Tubes For Furrow Irrigation In The Kimberleys, K S. Cole
Siphon Tubes For Furrow Irrigation In The Kimberleys, K S. Cole
Journal of the Department of Agriculture, Western Australia, Series 4
Irrigation soils in the Ord River area have a high clay content and erode easily under the influence of running water.
To overcome the problem of erosion in cuts between the head channels and irrigation furrows polythene siphon tubes have been found the most satisfactory.
In this article K. S. Cole, B.Sc. (Agric), Agricultural Adviser, Kununurra, describes the use of siphon tubes for furrow irrigation in the Kimberleys.
Freestone County, Texas [Water Quality Survey Of Wells And Springs With Test Hole Data, 1936], Samuel F. Turner
Freestone County, Texas [Water Quality Survey Of Wells And Springs With Test Hole Data, 1936], Samuel F. Turner
United States Geological Survey: Water Reports and Publications
Introduction
The purpose of this survey was to obtain information concerning existing wells and springs and the quantity and quality of water they yield, and to put down test holes where additional information was needed.
This project was part of a statewide Works Progress Administration project known as a "Statewide Inventory of Water Wells," sponsored by the [Texas] State Board of Water Engineers. The Division of Ground Water of the United States Geological Survey cooperated in the technical direction of the project and the Bureau of Industrial Chemistry of the University of Texas furnished laboratory space and equipment and supervised …