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Articles 29131 - 29160 of 30795
Full-Text Articles in Entire DC Network
A Logical Approach To Wheatbelt Water Supply, Stanley Thomas Smith
A Logical Approach To Wheatbelt Water Supply, Stanley Thomas Smith
Journal of the Department of Agriculture, Western Australia, Series 4
My particular task in this seminar (paper) has been to enunciate a logical approach to water recource utilisation in the wheatbelt, based on the points made by the speakers.
The Comprehensive Water Supply Scheme, K J. Kelsall
The Comprehensive Water Supply Scheme, K J. Kelsall
Journal of the Department of Agriculture, Western Australia, Series 4
The Comprehensive Water Supply Scheme has been a great boon to the agricultural area, and it has received strong support from all political parties. The Scheme has been responsible for increased prosperity of country towns, the decentralisation of industry, and general improvements in the standard of living.
This is a look at the development of the Scheme.
1976 Water Quality Hillsborough County, Florida, R. G. Wilkins
1976 Water Quality Hillsborough County, Florida, R. G. Wilkins
Reports
The Hillsborough County Environmental Protection Ac t charges the Environmental Prote ction Commission with the function of establishing, operating and maintaining a continuous program for monitoring water pollution. A county-wide water quality surveillance network has been designed to provide accurate data and information as t o whether the requirements of the Act are being complied with and whether the level of water pollution is increasing or decreasing throughout the county.
This broad base of water data obtained during 1972-1976 provides useful background data for eventual development, revision and enforcement of regulations, standard effluent limitation plans, or programs established under the …
Spruce Budworm In Maine, 1910-1976: Infestations And Control, David Weed
Spruce Budworm In Maine, 1910-1976: Infestations And Control, David Weed
Maine Collection
Spruce Budworm in Maine, 1910-1976: Infestations and Control
compiled by David Weed, Maine Forest Service, Maine Department of Conservation, 1977.
Contents: I. Introduction, II. Infestation Chronology, III. Defoliation 1910-18 to 1976, IV. Spraying History, V. Mothflight Data, VI. Aircraft Employed, VII. Aircraft: Photo Essay
Impact Of Dredging In Tampa Bay 1976, Roy R. Lewis Iii
Impact Of Dredging In Tampa Bay 1976, Roy R. Lewis Iii
Reports
During the last 100 years four major types of dredging have impacted the bay: channel deepening, maintenance dredging, shell dredging, and dredging for landfill construction. These landfills have resulted in the loss of 44% of the original marine wetlands bordering Tampa Bay. Recent environmental concerns have halted landfill dredging and severely restricted maintenance dredging.
A Model For Solid Waste Collection Costs, Bruce Anderson
A Model For Solid Waste Collection Costs, Bruce Anderson
Retrospective Theses and Dissertations
No abstract provided.
Some Basics Of Marron Production, Department Of Agriculture, Western Australia
Some Basics Of Marron Production, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
marron are native to the South-West of Western Australia, and are keenly sought by inland fisher-men. However, supplies do not equal the apparent demand.
One solution is to cultivate marron in farm dams, or more intensively as a commercial enterprise.
This article suggests a few guidelines for marron production.
Population, Home Range, And Dispersal Of Red Foxes In East-Central South Dakota, James D. Sweeting
Population, Home Range, And Dispersal Of Red Foxes In East-Central South Dakota, James D. Sweeting
Electronic Theses and Dissertations
The population, dispersal movements and summer home range of red foxes (Vulpes vulpes) were studied in east-central South Dakota during 1974 and 1975. The spring population density of foxes on a 23,319 ha study area declined from 9.2 families/township in 1974 to 7.6 families/township in 1975. Fifty-four percent of 130 foxes tagged in spring, 1974 and 1975 were recovered during the first year following tagging. Hunting and trapping accounted for 18.0 and 77.8 percent, respectively. Recoveries revealed that dispersing juvenile male foxes were more mobile than juvenile females; juvenile foxes traveled a mean distance of 39 km for males and …
A Stream Survey Of Riley Creek, Coles County, Illinois, Using Macroinvertebrates As Indicators Of Organic Pollution, Joseph R. Rowe
A Stream Survey Of Riley Creek, Coles County, Illinois, Using Macroinvertebrates As Indicators Of Organic Pollution, Joseph R. Rowe
Masters Theses
A stream survey of Riley Creek in Coles County Illinois, was undertaken to determine ecological trends and the qualitative status of the aquatic community throughout the course of the stream.
The survey encompassed the entire length of Riley Creek from the area of its status as an intermittant waterway to its confluence with Cassel Creek. Sampling periods included the months of April, May, June, July, October and November.
Macroinvertebrate collections were made at six locations along the stream approximately equidistant from each other. The organisms were assigned tolerance levels as designated by the Illinois Environmental Protection Agency.
Physical and chemical …
Digestibility Of Common Forage Plants And Energetic Requirements Of The Black-Tailed Prairie Dog, Maureen A. Beckstead
Digestibility Of Common Forage Plants And Energetic Requirements Of The Black-Tailed Prairie Dog, Maureen A. Beckstead
Electronic Theses and Dissertations
Black-tailed prairie dogs (Cynomys ludovicianus) assimilated 51.5 percent of the wheatgrass (Agropyron intermedium) they consumed; thus, they would have to consume 0.148 kcal · g-1 · day-l in order to obtain the 0.076 kcal · g-1 · day-1 they would require to maintain their weight. Prairie dogs assimilated 31.5 percent of the buffalograss/blue grama mixture (Buchloe dactyloides/Bouteloua gracilis) they were fed. They would have to consume 0.229 kcal · g-1 · day-1 of this forage to assimilate 0.072 kcal · g-1 · day-1 and maintain their weight. The proximate composition of forages fed in feeding trials was similar to that …
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume Iii. Appendix A, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume Iii. Appendix A, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Reports
Foreword: This report is composed of thee volumes; Volume I is the Research Report; Volume II consists of recommendations for establishing design manuals and Appendices B, C, D, E, F, G, and H, which are the design aids required for establishing design manuals; Volume III consists of Appendix A, and accumulation of the data base used in the study, FHWA chose to arrange the report as described to facilitate distribution of the results. The methods reported herein are designated as the Federal Highway Administration Methods are designed to be applied to watersheds smaller than 50 square miles but may be …
The Florida Coastal Zone Management Program: What, Why, How, Who., Florida Bureau Of Coastal Zone Planning, State Of Florida, Dept. Of Environmental Regulation, Division Of Environmental Programs, Bureau Of Coastal Zone Planning
The Florida Coastal Zone Management Program: What, Why, How, Who., Florida Bureau Of Coastal Zone Planning, State Of Florida, Dept. Of Environmental Regulation, Division Of Environmental Programs, Bureau Of Coastal Zone Planning
Waterways and wildlife
A Florida coastal zone management program, once approved and established, will be a cooperative effort of all levels of government and the citizens of Florida. It will establish coastal land and water resource policies, based on realistic goals and objectives, that contribute to the wise use of those resources and protect the options of future generations. It will be a system that is sensitive to criticism, accessible to review and appeal, and flexible enough to reflect changing goals, needs, attitudes and lifestyles. With this approach we can not only treat current problems, but can also avoid future resource use conflicts. …
Water Current, Volume 9, No. 1, January/February 1977
Water Current, Volume 9, No. 1, January/February 1977
Water Current Newsletter
Nebraska Water Resources Center Annual Report
Interdisciplinary Water Resources Seminar
Water Research in Nebraska
OWRT Seeks Applications for One-Year Appointment as Researcy Scholar
Carter Transition Team Blasts BUREC, Corps
Interstate Conference Wants WRC Directly Under President
National Water Information Network Opens Local Centers
Research Review: Pollution of Irrigation Reuse Water by Plant Pathogens
Effect Of Deforestation By The Douglas-Fir Tussock Moth On The Quality Of Streamflow And Stream Productivity Parameters, Martin Ed Hicks
Effect Of Deforestation By The Douglas-Fir Tussock Moth On The Quality Of Streamflow And Stream Productivity Parameters, Martin Ed Hicks
All Master's Theses
The purpose of this study was to determine if deforestation by a recent outbreak of Douglas-fir tussock moth and logging of such deforested timber has had any effect on stream water quality. To determine this, seven different watersheds of three types were examined. The three types were: undamaged watersheds as controls, watersheds with deforestation and watersheds with deforestation where the timber was subsequently logged. Twenty-four variables were used to determine water quality. Included were seven biological and seventeen chemical variables.
In general, the results indicate only seasonal fluctuations and differences between watersheds due to inherent properties of individual watersheds. Increased …
Test Sites For Farm Dams, Department Of Agriculture, Western Australia
Test Sites For Farm Dams, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
A short article outlining procedures for testing potential dam sites.
Design Standards For Farm Surface Water Supplies, J L. Frith
Design Standards For Farm Surface Water Supplies, J L. Frith
Journal of the Department of Agriculture, Western Australia, Series 4
Design is usually concerned with getting adequate return from limited recources. Farm dams which dry up represent dam failure. Less seriously, so too do dams which, although not drying out, never fill; they waste a recource.
Economics Of Farm Water Supplies, P P. Eckersley
Economics Of Farm Water Supplies, P P. Eckersley
Journal of the Department of Agriculture, Western Australia, Series 4
The economics of farm water supplies can be studied in two ways. One is to compare the costs of alternative ways of supplying a specified quantity of water to a farm. Another is to calcu;ate how mucha farmer can afford or will pay for a water supply.
I propose to look at these questions from the point of vieew of an eastern wheatbelt farmer, assuming that he must pay the full costs of any water supply provided for his property.
Optimizing Crop Production Through Control Of Water And Salinity Levels In The Soil, J. I. Stewart, R. M. Hagan, W. O. Pruitt, R. E. Danielson, W. T. Franklin, R. J. Hanks, J. P. Riley, E. B. Jackson
Optimizing Crop Production Through Control Of Water And Salinity Levels In The Soil, J. I. Stewart, R. M. Hagan, W. O. Pruitt, R. E. Danielson, W. T. Franklin, R. J. Hanks, J. P. Riley, E. B. Jackson
Reports
Sizable investments have been made and continue to be made throughout the world to develop irrigation potentials. Recent food shortages have heightened the concern for obtaining greater returns to irrigation through improved water management and use. A knowledge of how plant growth cycles relate to moisture and salinity levels in the root zone is prerequisite to developing practical ways of maintaining optimum conditions for maximum production per unit of water concerned. This research further defines the role of irrigation timing and salinity management on crop production, and proposes practical techniques for predicting the crop response to management measures. Some of …
Proposal To Technology Transfer Office Of Water Research And Technology U.S. Department Of Interior, C. Earl Israelsen, Frank W. Haws, Donna H. Falkenborg, L. Douglas James
Proposal To Technology Transfer Office Of Water Research And Technology U.S. Department Of Interior, C. Earl Israelsen, Frank W. Haws, Donna H. Falkenborg, L. Douglas James
Reports
Executive Summary:
Rural Domestic Water System Peak Flows And Design Innovations, Optimal Water Planning Series, Trevor C. Hughes, Yukio Kono, Ronald Canfield
Rural Domestic Water System Peak Flows And Design Innovations, Optimal Water Planning Series, Trevor C. Hughes, Yukio Kono, Ronald Canfield
Reports
Planning engineers commonly use generous factors of safety for peak flow estimates in urban water supply systems both as a hedge against unforeseen growth and because economies of scale result in relatively low user costs even with such reserve capacity. Transplanting of such design criteria into the rural setting, however, simply does not work. The low density portions of rural domestic systems require very realistic design criteria or the construction costs become infeasible for the small number of customers involved. Peak instantaneous flow rates in a Utah rural system were measured continuously during two summers on three dead-end lines serving …
State Financing Alternatives For Water Projects Required To Support Energy Development In The Western Energy Development Area, Daniel H. Hoggan, Kirk R. Kimball, Edward H. Allen, Jay M. Bagley, Richard L. Dewsnup, Herbert H. Fullerton
State Financing Alternatives For Water Projects Required To Support Energy Development In The Western Energy Development Area, Daniel H. Hoggan, Kirk R. Kimball, Edward H. Allen, Jay M. Bagley, Richard L. Dewsnup, Herbert H. Fullerton
Reports
No abstract provided.
A Study Of Feasibility Of State Water User Fees For Financing Water Development, Daniel H. Hoggan, O. W. Asplund, J. C. Anderson, D. G. Houston
A Study Of Feasibility Of State Water User Fees For Financing Water Development, Daniel H. Hoggan, O. W. Asplund, J. C. Anderson, D. G. Houston
Reports
Water user fees imposed by a state on major water uses is a possible new alternative source of state water development funds. A fee, similar to an excise tax, might be charged for the use of the water resource per se, which in a number of states is declared to be the property of the public of the state. States generally have not employed such fees as a source of operating funds for water agencies or of development capital. Only in the area of water based recreation-fishing, coating, camping, etc.—have states extensively employed user fees. The revenues from these fees, …
Series Intermittent Sand Filtration Of Wastewater Lagoon Effluents, David W. Hill, J. H. Reynolds, D. S. Filip, E. J. Middlebrooks
Series Intermittent Sand Filtration Of Wastewater Lagoon Effluents, David W. Hill, J. H. Reynolds, D. S. Filip, E. J. Middlebrooks
Reports
Previous researches have found single stage intermittent sand filtration to be a feasible and economic means of upgrading wastewater lagoon effluent to meet future standards. However the major constraint on their use has been the length of the filter runs. Laboratory scale and pilot-scale series intermittent sand filtration of wastewater lagoon effluents has been found to substantially increase the length of filter runs as well as produce a high quality effluent able to meet future standards. Higher loading rates were round to be possible with series intermittent sand filtration. The operation consistently produced an effluent meeting present Utah “Class C” …
Proceedings Of The Utah Water Pollution Control Association Annual Meeting 1977, James H. Reynolds, Donna H. Falkenborg
Proceedings Of The Utah Water Pollution Control Association Annual Meeting 1977, James H. Reynolds, Donna H. Falkenborg
Reports
Preface: This volume is the first published proceeding of the Utah Water Pollution Associations Annual Meeting. The Technical Program of the Annual Meeting was divided into five separate sessions. The program was developed to attract individuals concerned with management, design and operation of wastewater treatment facilities. Special emphsis was given to the design and operation of wastewater filtration devices. Unfortunately, four papers are not included in the proceedings because the authors failed to meet the submission deadline. These papers are (1) "Utah Discharge Requirements" by Calvin Sudweeks, (2) "Chlorine, Califorms, 1977 Standards and you" by Robert A. Sperling, (3) "Panel …
Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney
Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney
Reports
Batch cultures of
The Virgin River Basin Study: A Regional Approach To Multiobjective Planning For Water And Related Resources, John E. Keith, Jim Mulder, Trevor C. Hughes, V. A. Narasimhan, Lance Rovig, Karl Eriksen, Don D. Fowler, Lucinda Borchard, Kirk Kimball, Spence Ballard, K. S. Turna, Daniel H. Hoggan
The Virgin River Basin Study: A Regional Approach To Multiobjective Planning For Water And Related Resources, John E. Keith, Jim Mulder, Trevor C. Hughes, V. A. Narasimhan, Lance Rovig, Karl Eriksen, Don D. Fowler, Lucinda Borchard, Kirk Kimball, Spence Ballard, K. S. Turna, Daniel H. Hoggan
Reports
A joint research effort by the Utah Water Research Laboratory and the Nevado Center for Water Resources Research applied two multiobjective planning models to the Virgin River Basin in order to test the efficiency and practicality of applying such tools in water resrouces planning. The surrogate Worth Trade-off (SWT) method couples mathematical optimization to quantify trade offs among noncommensurable objectives with interviews to compare public preferences with respect to these trade offs. PROPDEMM uses information on interest group objectives, balues, willingness to pay, influence, lebel of information, etc. to compare the political feasibility of alternative courses of action. Both models …
Upgrading Aerated Lagoon Effluent With Intermittent Sand Filtration, Richard P. Bishop, James H. Reynolds, Daniel S. Filip, E. Joe Middlebrooks
Upgrading Aerated Lagoon Effluent With Intermittent Sand Filtration, Richard P. Bishop, James H. Reynolds, Daniel S. Filip, E. Joe Middlebrooks
Reports
Intermittent sand filtration was evaluated as a means of upgrading the quality of aerated lagoon effluents to satisfy the requirements of PL 92-500. The aerated lagoon in question treats the wastes from a milk and cheese factory located in northern Utah. The treatment system consists of two diffused air aeration ponds followed by a facultative settling pond, were applied to pilot scale intermittent sand filters with 0.17 mm and 0.40 mm effective size sands. The filters were loaded hydraulically from 0.25 million gallons per acre per day to 1.0 million gallons per acre per day. It was found that sand …
Environmental Quality Management In A Region With External Development Pressures, A. Bruce Bishop, Rangesan Narayanan, Lloyd E. Peterson, Roger D. Hansen, Matthew B. Conover
Environmental Quality Management In A Region With External Development Pressures, A. Bruce Bishop, Rangesan Narayanan, Lloyd E. Peterson, Roger D. Hansen, Matthew B. Conover
Reports
The objective of this study was to examine the problems of managing residuals and environmental quality in a region facing potentially rapid growth as a consequence of externally made development decisions. The research adapted and applied the residuals environmental management concept which recognizes the need for an integration of physical methods, implementation incentives and institutional arrangements in controlling air, water and solid residuals. The area selected for study, the Uintah Basin in Southeastern utah, has the potential for extensive energy resource and mineral development and could experience a large population influx and accelerated economic growth as a result. in the …
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume I. Research Report, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume I. Research Report, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Reports
Foreword: This report is composed of thee volumes; Volume I is the Research Report; Volume II consists of recommendations for establishing design manuals and Appendices B, C, D, E, F, G, and H, which are the design aids required for establishing design manuals; Volume III consists of Appendix A, and accumulation of the data base used in the study, FHWA chose to arrange the report as described to facilitate distribution of the results. The methods reported herein are designated as the Federal Highway Administration Methods are designed to be applied to watersheds smaller than 50 square miles but may be …
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method. Volume Ii, Recommendations For Preparing Design Manuals And Appendices B, C, D, E, F, G, & H, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method. Volume Ii, Recommendations For Preparing Design Manuals And Appendices B, C, D, E, F, G, & H, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde
Reports
Frequency analyses of more than 1,000 small watersheds in the United States and Puerto Rico were used to develop the estimation method for design of peak flow for ungaged watersheds. This method, called the Federal highway Administration (FHWA) method, is conceptually similar to the Bureau of Public Roads (BRP) method developed by W. D. Potter. The FHWA method relates the runoff peak to easily determined hydrophysiographic parameters and is intended for use on watersheds smaller than 50 square miles. The concept of risk is incorporated inot the design procedure. The risk is the probability that one or more events will …