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Articles 8011 - 8040 of 8291
Full-Text Articles in Physical Sciences and Mathematics
Trickle Irrigation, B Swan
Trickle Irrigation, B Swan
Journal of the Department of Agriculture, Western Australia, Series 4
THE introduction of trickle irrigation has caused tremendous interest among commercial irrigators. While not a new concept, its application was formerly restricted to glasshouse and nursery use.
Water Resources News, Volume 2, No. 11, December 1970
Water Resources News, Volume 2, No. 11, December 1970
Water Current Newsletter
March Seminar Planned
Groundwater Seminar
Summer Short Course Planned
Boy Scout Guides
Beneficial Effects of Air Pollution Abatement
Engineering Criteria For Animal Waste Treatment Lagoons in North Carolina
Department of the Interior Organizational Alignments Affecting OWRR
Phosphate Detergents Banned in Chicago
Water Resources Legislation in the Congress
NSF Funds Curriculum Project to Aid Fight Against Water Pollution
Ruckelshaus Named EPA Head
Recycled Wastewater Used at Latex Plant
Research Review
New Publications Received by the Institute
Program for the 1971 Interdisciplinary Seminar on Water Resources
Water Resources News, Volume 2, No. 10, November 1970
Water Resources News, Volume 2, No. 10, November 1970
Water Current Newsletter
NWRRI Director Named Executive Secretary of Universities Council on Water Resources
1971 Summer Institutes Planned
Research and Development Sources Sought
NWRRI Proposals Submitted
FWQA Booklet on Fish Mortalities
Urban Wastewater Renovation Through Agriculture
Control of Oil Pollution
Environmental Education Bill to White House
Title II Awards for FY 1971
Case Studies in Water Resources Systems Analysis
National Environmental Pollution Conference
UCOWR Annual Meeting Held in Virginia
Reorganizational Plans for Environmental Programs
National Water Commission Studies
Research Review
New Publications Received by the Institute - November
Digital Systems For On-Site Collection For Water Quality Analysis, M. K. Testerman
Digital Systems For On-Site Collection For Water Quality Analysis, M. K. Testerman
Technical Reports
A prototype system has been developed for recording and transmitting digital data at a remote water quality monitoring station in an unattended manner. As many as eight analog signals from transducers, which measure water quality characteristics such as dissolved oxygen, temperature, pH, chlorides, conductivity, redox, and turbidity, are converted to digital signals and recorded in binary coded decimal format on magnetic tape. This unit may be contacted from a central station for playback of the day's recording. The transmitted data can be recorded at the central station by teletype. Each data record includes a time-of-day "word" so that all data …
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.
Water Resources News, Volume 2, No. 9, October 1970
Water Resources News, Volume 2, No. 9, October 1970
Water Current Newsletter
Water Resource Projects Will Be Scrutinized
Mann Appointed to National Water Commission Staff
Klein Resigns
National Irrigation Symposium
Water Pollution and Water Quality
Closed Industrial Wastewater Systems
47 Rivers as Potential Wild or Scenic Streams
Community Water Supply Study Revealed
Office of Saline Water Annual Report
New Federal Legislation on Municipal Water Supplies
Underground Injection of Wastewaters
New Guidelines Will Place Greater Emphasis on Alternatives
Environmental Quality Education Bill Passed
Wastes Linger in Long Island Ground Water
Research Review
Interdisciplinary Water Resources Seminar
New Publications Received by the Institute
Algal Growth And Decomposition: Effects On Water Quality, Phase Ii, Edward G. Foree, Ronald L. Barrow
Algal Growth And Decomposition: Effects On Water Quality, Phase Ii, Edward G. Foree, Ronald L. Barrow
KWRRI Research Reports
The decomposition and associated nutrient regeneration of three unialgal cultures and one mixed culture containing an indigenous population of bacteria and microscopic animals were studied under dark, constant temperature laboratory conditions. After periods of nutrient-deficient growth ranging from O to 30 days, these cultures were inoculated with decomposer populations and subjected to anaerobic and aerobic environments for the decomposition studies. The extend of decomposition was determined from the percentage volatile suspended solids and percentage particulate COD remaining after 200 days of decomposition. The average extent of decomposition was greater for aerobic than for anaerobic conditions. However, significant portions of the …
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 …
Water Resources News, Volume 2, No. 8, September 1970
Water Resources News, Volume 2, No. 8, September 1970
Water Current Newsletter
Waste Water Reuse
Action on Mercury Pollution
Improving Waste Treatment
Westside Water Resources Study
Pollution Guide for Scout Leaders
Water Pollution Control Need $33-37 Billion
Cleaning Nation's Waterways
Under Water Power Plants
Wanted - Catalog of Products Which Are Potential Waters Polluters
FWQA Wastewater Technology Study
Proposal Deadlines
University of Illinois Annual Water Quality Conference
Research Review
New Publications Received by the Institute
Water Resources News, Volume 2, No. 7, August 1970
Water Resources News, Volume 2, No. 7, August 1970
Water Current Newsletter
New Protection Agency Proposed
New Oceanic Group
Environmental Changes Beneficial
Myth Criticized
Dirty Rain Damages Building
Harvesting Algae
Mercury Pollution Spreading
Potomac River Sites for Desalting Tests
Water Pollution Control Rules
Price Increase to Improve Environment
Water Management Proposal
Research Review
New Publications Received by the Institute
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 …
Water Resources News, Volume 2, No. 6, June-July 1970
Water Resources News, Volume 2, No. 6, June-July 1970
Water Current Newsletter
OWRR Title II Proposals Invited
Studies of Brine Water Disposal
Sediment Pollution from Road Building to be Controlled
Graduate Studies in Water Resources
University of Nebraska Water Resources Planning and Management Program Approved
Research Needed on Oil Pollution Source Identification
Third Outdoor Recreation Research Catalog Announced
Cost Study Shows Need for Increased Municipal Spending for Water Pollution Control
National Conference on Environmental Pollution
Canadian Water Sales May Become Reality
$344,000 Contract Awarded Gillette Research by FWQA to Develop Phosphate-Free Detergents
Meeting "Challenge of the Environment" is Corps of Engineers' Greatest Challenge
Sand Hills is Test Ground This Summer
NWRRI Annual …
A Preliminary Survey Of The Damariscotta River Estuary, Lincoln County, Maine, Maine Department Of Economic Development
A Preliminary Survey Of The Damariscotta River Estuary, Lincoln County, Maine, Maine Department Of Economic Development
Maine Collection
A Preliminary Survey of the Damariscotta River Estuary, Lincoln County, Maine
Part I - Hydrology; Part II - Sediments
"Prepared Under a Grant From the Maine Marine Stipend Program".
Maine Department of Economic Development - Division of Science, Technology & Mineral Resources, Augusta, Maine (July 1969 - June 1970).
Water Resources News, Volume 2, No. 5, May 1970
Water Resources News, Volume 2, No. 5, May 1970
Water Current Newsletter
Proposal Deadlines for Research Projects
Mr. Eugene Eaton Visits Nebraska Institute
Eutrophication Publication Available
Symposium on Man-Made Lakes
National Science Foundation Provides Grant for Students
Department of the Interior to Sponsor Conference on Environmental Pollution
President Signs Water Quality Improvement Act of 1970
Possible Reclamation of Wastewater for Denver?
Water Quality Administration Seeks Studies on Cost of Preventing Pollution
New Pollution Control Proposed by Secretary Hickel
High-Priority Problem Areas
Research Review
New Publications Received by the Institute
Water Resources News, Volume 2, No. 4, April 1970
Water Resources News, Volume 2, No. 4, April 1970
Water Current Newsletter
Increased Funds for State Water Resources Institute?
Bureau of Reclamation Seeks Research and Development
Bureau of Reclamation Opens Facilities to the National Scientific Community
International Field Year for the Great Lakes to Get Underway
Federal Water Pollution Control Administration Grant to High School Students
President's Task Force on Rural Development Advocates More Support of Water Programs
Water Pollution Control Bill
Possible Increase in Water Supply for the Western States
General Accounting Office Comments on Federal Water Pollution Control Administration
Student-Run Environmental Research Program Supported by NSF
Committee on Water Resources Long-Range Research Plan
15th Annual Midwest Ground-Water Conference
Research Review …
Water Resources News, Volume 2, No. 3, March 1970
Water Resources News, Volume 2, No. 3, March 1970
Water Current Newsletter
NWRRI Announces Approval of Matching Grant Proposals
National Environmental Policy Act of 1969 - Landmark Achievement
Chairman of Environmental Quality Council Named by Nixon
River System Engineering - Summer Short Course
Plan to Eliminate Thermal Pollution - Result in Navigation Channels?
Executive Director Appointed to Water Resources Council
Ecologic Aspects of Weather Modification
Ash Commission Reports on Civil Works Functions of the Corps
Hail Suppresion, Next Major Thrust of Weather Modification Research Program
USDA to Fight Water and Soil Pollution from Animal Wastes
Major Clean-Up Proposals Made by Nixon
NSF to Redirect Its Efforts
USGS to Lead Research in Underground …
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 …
Water Resources News, Volume 2, No. 2, February 1970
Water Resources News, Volume 2, No. 2, February 1970
Water Current Newsletter
Evaporation Reduction
National Science Foundation Announces a New Program
The Universities and Environmental Quality
Guidelines Will Be Issued for Federal Programs Affecting the Environment
Conservation and the Environment - Big Political Issue?
National Land Use Policy Act of 1970
The Safety of Community Water Supply Systems
River System Engineering - Summer Short Course
OWRR Holds Fifth Annual Water Resources Research Conference
Environmental Health Service Organized at HEW
Algae-Eating Fish - A Possible Way to Control Eutrophication?
Resources for the Future Considerse Non-Monetary Benefits for Conservation Goals
Agreement to Require Discharges of Wastes Into the Nation's Waterways to Reveal Their Pollution …
Water Resources News, Volume 2, No. 1, January 1970
Water Resources News, Volume 2, No. 1, January 1970
Water Current Newsletter
Implementation of Legislative Bill LB57
Council on Environmental Quality Established
Users Charges Suggested for Flood Control and Navigation
Applied Mathematical Programming in Water Resources
NSF Seeks Proposals for Research on Social Problems
Tentative Regulations Issued for Water Pollution Control Grants
Research on Phosphate-Free Detergents Sought
Land Grant Colleges Urge Expansion of Water Centers
GAO Review of Pollution Control Effort
Additional Urban Water Needed
Listing of FWPCA Awards in Research
Research Review
New Publications Received by the Institute
Reducing Evaporation From Farm Dams : A Progress Report December 1969, I A F Laing
Reducing Evaporation From Farm Dams : A Progress Report December 1969, I A F Laing
Journal of the Department of Agriculture, Western Australia, Series 4
IN most seasons in the Western Australian Wheatbelt evaporation reduction techniques rate a low priority due to either the expense or the relative inefficiency of the techniques.
It is generally agreed that a similar investment in deepening or enlarging existing dams, or making new dams larger from the outset, is likely to be more profitable.
The Growing Season, Department Of Agriculture, Western Australia, Bureau Of Meteorology
The Growing Season, Department Of Agriculture, Western Australia, Bureau Of Meteorology
Journal of the Department of Agriculture, Western Australia, Series 4
IN AUSTRALIA the seasons of summer, autumn, winter and spring do not have the importance that they have in the Old World, and though summer and winter weather are quite different, there is not the obvious difference in autumn and spring conditions that there is in the colder countries.
This is largely due to the difference in vegetation and in its life cycle in the different places.
Likelihood Of Drought Years In South-Western Australia : How Often Can Droughts Such As That Of 1969 Be Expected In Western Australia's Farming Areas?, Eugene Adsil Fitzpatrick
Likelihood Of Drought Years In South-Western Australia : How Often Can Droughts Such As That Of 1969 Be Expected In Western Australia's Farming Areas?, Eugene Adsil Fitzpatrick
Journal of the Department of Agriculture, Western Australia, Series 4
Because of the serious consequences of drought to individual farmers and to Western Australia's economy, it is worth making an early appraisal of the 1969 rainfall conditions that led to the State's most recent drought in an attempt to estimate how often such seasons might be expected in the agricultural areas.
The Control Of Algae, G R W Meadly
The Control Of Algae, G R W Meadly
Journal of the Department of Agriculture, Western Australia, Series 4
CONDITIONS in areas of still, stored water in Western Australia can easily become ideal for the development of algae and control measures may become necessary in farm dams and swimming pools.
Factors Affecting Relocation In Response To Reservoir Development, Rabel J. Burdge, Richard L. Ludtke
Factors Affecting Relocation In Response To Reservoir Development, Rabel J. Burdge, Richard L. Ludtke
KWRRI Research Reports
The focus of this paper is on the question of how rural people anticipate forced moves as a result of flood control projects and how they change their life in accepting separation from familiar surroundings.
A model of faced migration is presented which sees the variables of socioeconomic status, knowledge of reservoir projects, vested interests and the degree of identification with place of affected persons as producing differential apprehension over moving. Differential apprehension is then seen as producing different attitudes toward the project which will influence the type of migration plans.
To test this model of forced migration, data were …
Evaluation Of The Social Impact Of Reservoir Construction On The Residential Plans Of Displaced Persons In Kentucky And Ohio, Richard L. Ludtke, Rabel J. Burdge
Evaluation Of The Social Impact Of Reservoir Construction On The Residential Plans Of Displaced Persons In Kentucky And Ohio, Richard L. Ludtke, Rabel J. Burdge
KWRRI Research Reports
The states of Kentucky and Ohio have numerous reservoir projects at various stages of planning and construction. Each of the projects produces substantial social impact for the residents of the area and particularly for those persons affected by a loss of property and homes. This impact is not uniform in that people respond differently to displacement and the methods of adjusting relocation are known to differ among people.
This research was initiated to develop and test a model for explaining migration under such conditions. The model includes a consideration of people's potential for transferring existing statuses to new residences, the …
Distribution Of Trace Elements In Impoundments, J. Nix
Distribution Of Trace Elements In Impoundments, J. Nix
Technical Reports
An investigation of the trace element content of two impoundments on the Ouachita River, Arkansas, was conducted. Common water quality parameters were followed in the reservoirs in an effort to determine the factors which were influencing the trace element concentration. The following trace metals were determined in both the particulate phase (retained by a 0.45 micron filter) and the soluble phase (passed by a 0.45 micron filter): iron, manganese, copper, cobalt, nickel, lead, chromium, and zinc. These measurements were made periodically for one and a half years. Results indicate that the chemical regime of the impoundments which were studied was …
An Evaluation Of Relationships Between Streamflow Patterns And Watershed Characteristics Through The Use Of Opset, L. Douglas James, William O. Thompson, Glendon Allen Ross, Earnest Y. Liou
An Evaluation Of Relationships Between Streamflow Patterns And Watershed Characteristics Through The Use Of Opset, L. Douglas James, William O. Thompson, Glendon Allen Ross, Earnest Y. Liou
KWRRI Research Reports
Selection among alternative flood control measures would be better informed if better information could be obtained on the marginal change in flood hazard associated with land use and other changes in the tributary watershed. Hydrologic modeling is the most promising approach to answering this question; however, the use of existing models is hampered by the absence of information correlating model parameters with physical characteristics of the watershed.
To deal with this situation, a method was developed for estimating the parameter values for the Stanford Watershed Model which best match recorded with simulated streamflows. Physical characteristics were measured for 17 rural …
Part I - Controlling The Soil Moisture Environment Of Transpiring Plants, Part Ii - Prediction Of Leaf Temperature Under Natural Atmospheric Conditions, Charles T. Haan, Billy J. Barfield, Robert Edling
Part I - Controlling The Soil Moisture Environment Of Transpiring Plants, Part Ii - Prediction Of Leaf Temperature Under Natural Atmospheric Conditions, Charles T. Haan, Billy J. Barfield, Robert Edling
KWRRI Research Reports
Part I
A technique for controlling the soil moisture potential in the root zone of transpiring plants was developed. The method uses the principles of unsaturated flow through a porous media to develop the desired moisture potential. In the case of non-steady state transpiration, the maximum possible fluctuation in the soil moisture potential can be determined by the techniques presented.
Part II
Two implicit leaf temperature prediction equations were derived from the energy balance approach. The equations define sensible and latent heat transfer from a plant population as a two step process:
- Transfer between the plant leaf and the canopy …
Anticipations Of Change: A Socio-Economic Description Of A Kentucky County Before Reservoir Construction, Charles Robert Smith
Anticipations Of Change: A Socio-Economic Description Of A Kentucky County Before Reservoir Construction, Charles Robert Smith
KWRRI Research Reports
In the past the construction of large reservoirs in the United States has been evaluated largely in terms of the economic benefit they bring to the area where they are constructed and to the nation. Where human populations are involved, however, a host of social changes occur, many of which fundamentally alter the way of life of a people.
This report is part of a larger study which aims at analyzing the social costs and benefits of reservoir construction. The project is long range in that studies are to be carried out before, during, and after construction. This report concentrates …