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Articles 6721 - 6750 of 6788
Full-Text Articles in Environmental Indicators and Impact Assessment
Fisheries Report No Vii (7) - Results Of A Biological Survey Of The Millstream Area, A. A. Burbidge Dr
Fisheries Report No Vii (7) - Results Of A Biological Survey Of The Millstream Area, A. A. Burbidge Dr
Fisheries Research Reports
Millstream has long been recognised as an unique and outstanding area, both scenically and from a biological aspect. The area of prime interest consists of a series of deep pools in the bed of the Fortescue River (about 15 miles long including Gregory Gorge) and the springs and streams which feed them. Most of the springs are in the sides of the river bed but one of the largest is about 1% miles to the south. This feeds a swift flowing stream running north into the river bed.
The first Europeans to see the area were the exploring party led …
Growing Plants With Salty Water, C V. Malcolm, S. T. Smith
Growing Plants With Salty Water, C V. Malcolm, S. T. Smith
Journal of the Department of Agriculture, Western Australia, Series 4
LACK of good quality water in many parts of Western Australia often forces people to use salty water for irrigation and gardening.
This article gives some hints on how to reduce salt damage to plants when salty water must be used for irrigation or gardening.
It includes a table of plants which may be irrigated with water of varying degrees of salinity and lists precautions which should be taken for each group.
Anclote Environmental Project Report 1970, Marine Science Institue, University Ofsouth Florida
Anclote Environmental Project Report 1970, Marine Science Institue, University Ofsouth Florida
Reports
A comprehensive environmental study involves lengthy and complex research and this report presents results which are preliminary in nature. The sampling period was limited to the fall (September-November) of 1970 in an area which shows marked seasonality. The results however represent a considerable body of information on the Anclote environment and valuable conclusions can be drawn from them. Included in the reports of each sub-discipline which follow are comments on future objectives, especially those for the coming year.
Anclote Environmental Project Report 1971, Marine Science Institute, University Of South Florida
Anclote Environmental Project Report 1971, Marine Science Institute, University Of South Florida
Reports
The sub-discipline reports which follow represent a considerable body of data on the Anclote environment. In general the results provide additional support for many of the conclusions stated or implied in the Annual Report for 1970 (op. cit.). The considerable diversity and complexity of the Anclote estuary and Anchorage including the major role of the grassbeds is now documented in some detail. The overall results also support previous recommendations concerning power plant construction and design (op. cit.).
Irrigating With Underground Water, T C. Calder
Irrigating With Underground Water, T C. Calder
Journal of the Department of Agriculture, Western Australia, Series 4
MANY farmers in South-West areas are looking to irrigation to increase and diversify farm production, particularly on the sandy coastal plain where irrigation in summer is essential for vegetable, fruit and fodder production.
Control Of Water Resources In W.A, T C. Calder
Control Of Water Resources In W.A, T C. Calder
Journal of the Department of Agriculture, Western Australia, Series 4
Use of underground and surface water is controlled so that the supplies are available to the general benefit of all domestic, industrial and agricultural users in a particular area.
Water is a valuable resource and its contamination and wastage must be avoided. This article outlines the provisions of the Rights in Water Act which is designed to protect water supplies from undue exploitation, contamination and wastage.
Micronutrients And Biological Patterns In Lake Mead, Hasan K. Qashu, Lorne G. Everett, J. S. Carlson, Bureau Of Reclamation
Micronutrients And Biological Patterns In Lake Mead, Hasan K. Qashu, Lorne G. Everett, J. S. Carlson, Bureau Of Reclamation
Publications (WR)
Progressive increases in concentration of dissolved solids in the Colorado River water from Lake Powell to Imperial Dam seem to alter plankton dynamics and biological productivity of the river. Also, changes in biological productivity and micronutrients concentrations occur within the same reservoir. Development of a digital simulation model to predict micronutrients concentrations and biological productivity is necessary for diagnosing changes in plankton population and effluent-carrying capacity of the system. The objectives of the study are: (1) to determine trace metal balance at different locations in Lake Mead, (2) to measure biological productivity and conduct plankton population counts at each sampling …
The Effect Of Las Vegas Wash Effluent Upon The Water Quality In Lake Mead, D. A. Hoffman, P. R. Tramutt, F. C. Heller, Bureau Of Reclamation
The Effect Of Las Vegas Wash Effluent Upon The Water Quality In Lake Mead, D. A. Hoffman, P. R. Tramutt, F. C. Heller, Bureau Of Reclamation
Publications (WR)
This study developed from observations made during an earlier study on Lake Mead which was reported in CHE-70, Water Quality Study of Lake Mead. Results from that study indicated that poor-quality water was flowing into the Las Vegas Bay reach of Boulder Basin, Lake Mead. Also reports of deteriorating water quality, resulting in taste and odors in domestic water supplies taken from Boulder Basin as well as a reduction in the attractiveness of Las Vegas Bay for recreational uses caused by aquatic plants and algae blooms, indicated a need for a concentrated study concerning the effects of flows from Las …
The 1963-64 Lake Mead Survey, J. M. Lara, J. I. Sanders, Bureau Of Reclamation
The 1963-64 Lake Mead Survey, J. M. Lara, J. I. Sanders, Bureau Of Reclamation
Publications (WR)
The 1963-64 Lake Mead survey was run to compute the reservoir capacity. Results of the geodetic and hydrographic surveys and sediment sampling equipment are described. The geodetic survey showed Hoover Dam subsided an average of 118 mm since 1935. Sonic sounding, photogrammetry, and crosssectional profiling methods were used to run the hydrographic survey. Reservoir area and capacity tables were generated using an electronic computer. The present lake capacity is 29,755,000 acre-ft and the reservoir surface area is 162,700 acres at elevation 1229 ft. 2,720,000 acre-ft of sediments accumulated in the lake since 1935. A unit weight of 60 Ib/cu ft …
Planning Aspects Of Pollution Control, Donald T. Cannell
Planning Aspects Of Pollution Control, Donald T. Cannell
Marine Affairs Theses and Major Papers
Pollution control and abatement has become a national social goal but improvement impeded by lack of adequate resource allocation. The uncertainties of technology, financing, nature, politics, law and institutionalism must be evaluated by corporate and government planners to find long-run solutions. The evaluation of the sensitivity of planning recommendations to the uncertainty involved in this multi-variate problem, along with national economic shifts caused by alternative abatement funding programs is critical in formulating the “best” plan to ensure success of the national program.
Economic Impact Of Horse Industry In Nm_1970, University Of New Mexico Bureau Of Business And Economic Research
Economic Impact Of Horse Industry In Nm_1970, University Of New Mexico Bureau Of Business And Economic Research
BBER Publications
The major portion of the study has been devoted to the investment and revenues associated with racing activities in the State, and has been modeled upon a Study Plan prepared by David Novick Associates of Santa Monica, California, for the Thoroughbred Owners and Breeders Association.
Problems And Management Of Water Quality In Hillsborough Bay, Fl, Federal Water Pollution Control Administration
Problems And Management Of Water Quality In Hillsborough Bay, Fl, Federal Water Pollution Control Administration
Reports
Full scale filed operations began on June 8, 1967. Since that time, a pattern of pollution, water quality degradation and a complex ecological system has been defined.
How Important Is Sulphur For Pastures?, R N. Glencross, W. J. Cox
How Important Is Sulphur For Pastures?, R N. Glencross, W. J. Cox
Journal of the Department of Agriculture, Western Australia, Series 4
With the introduction of low sulphur compound and concentrated fertilisers, a new look is required at the sulphur status of West Australian soils, and the sulphur requirement of pasture.
In this article the functions of sulphur, deficiency symptoms and potential problem soils are described.
Current recommendations and plans for future research work are outlined.
Flora And Fauna Conservation : A Plea To Landholders, Clee Francis Howard Jenkins
Flora And Fauna Conservation : A Plea To Landholders, Clee Francis Howard Jenkins
Journal of the Department of Agriculture, Western Australia, Series 4
MUCH of the recent discussion on conservation has centred around the importance of wild flower reserves and the necessity for protecting one of the State's most important tourist attractions.
Although less important to visitors than the flowers, many of our wild animals hold equal interest for nature lovers and scientists, and they also need protection.
Soil Conservation Land Use, J E. Watson
Soil Conservation Land Use, J E. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
MANY things are blamed for soil erosion—including storms, fires, cost-price squeezes, ploughing downhill and rabbits. But the basic factor is the risk involved in the way the land is used.
It is therefore vital that everyone—not only farmers—should begin their thinking about soil conservation from the land use aspect (of which special practices such as contouring, are a small though spectacular part.)
Patterns Of Land Use Change Around A Large Reservoir, Billy R. Prebble
Patterns Of Land Use Change Around A Large Reservoir, Billy R. Prebble
KWRRI Research Reports
Reservoirs are built to control floods, provide water for irrigation and municipal supply, generate electric power, augment low flows for navigation and water quality control, and provide improved fishing and recreation opportunity. A reservoir is justified if the benefit it provides to society exceeds the cost to develop it. Much research has been done to determine the benefit of a water resources development to society as a whole. Some research has explored the benefit of such a facility to a region. Very little research exists on the effects of a reservoir on the immediately surrounding area.
It seems reasonable that …
Land Use In The Kulin-Kondinin-Hyden District : Notes On A Recent Survey, D J. Carder
Land Use In The Kulin-Kondinin-Hyden District : Notes On A Recent Survey, D J. Carder
Journal of the Department of Agriculture, Western Australia, Series 4
A RECENT survey by the Department of Agriculture's Soil Conservation Service has highlighted the nature of the problems facing farmers with flooded or salt-affected land near salt lake country in the wheatbelt.
Bulletin No 3609 - Land Development In The South Eastern Wheatbelt, G T. Halpin, P. Nelson
Bulletin No 3609 - Land Development In The South Eastern Wheatbelt, G T. Halpin, P. Nelson
Bulletins - 3000 - 3999
Interest in the development of light lands in the south-eastern wheatbelt was spurred by the many ex-servicemen seeking farms after the 1939-45 World War.
Previous attempts to develop this area had been frustrated by poor crop yields, and by the poor carrying capacity of those volunteer pastures which developed on cleared land.
Research into reasons for the poor crop results was begun in 1948-49 with trials sown by Messrs Smith and Halpin between Borden and Lake Grace. The results clearly showed the important role played by copper and zinc in successful crop growth. Since then, field trials have been conducted …
Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration
Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration
Publications (WR)
This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.
Economic Analysis Of Flood Detention Storage By Digital Computer, James Ray Villines, L. Douglas James
Economic Analysis Of Flood Detention Storage By Digital Computer, James Ray Villines, L. Douglas James
KWRRI Research Reports
The objective of this study was to develop a digital computer procedure for preliminary analysis of the economic justification of reservoir detention storage for flood control and to present a sample study illustrating its application. A computer program called the University of Kentucky Flood Control Planning Program III was developed and tested on the flood plain of the South Fork of the Licking River in northeastern Kentucky.
Given a specified reservoir site and a downstream flood plain divided into planning units, Program III selects the economically efficient combination of reservoir detention storage and the associated combination of channel improvement, flood …
The Ord River Regeneration Project. 2. Dealing With The Problem, K Fitzgerald
The Ord River Regeneration Project. 2. Dealing With The Problem, K Fitzgerald
Journal of the Department of Agriculture, Western Australia, Series 4
THE PROGRAMME of protective and remedial work being undertaken in the Ord River catchment area had as its major objective the re-establishment of perennial vegetation, as a means of controlling erosion and reducing the silt load of the rivers. It is now in its seventh year of operation.
Entering The Egg Industry With Laying Cages, W Ward
Entering The Egg Industry With Laying Cages, W Ward
Journal of the Department of Agriculture, Western Australia, Series 4
DEPARTMENT of Agriculture Bulletin 3579, "Entering the Egg Industry with Laying Cages", by W. Ward, examines various aspects of the cage system of housing laying hens.
This system is by far the most popular method of housing layers, with 90 per cent, of new farms using cages and many daep litter farms now converting to cages.
Space Requirements For Pullets And Layers On Litter, A H. Lean
Space Requirements For Pullets And Layers On Litter, A H. Lean
Journal of the Department of Agriculture, Western Australia, Series 4
UNEVEN growth, cannibalism, weakened resistance to disease, unsanitary conditions and poor production commonly arise from failure to provide sufficient floor, feed and watering space for pullets and layers.
The Ord River Regeneration Project. 3. Eight Years Of Progress, K Fitzgerald
The Ord River Regeneration Project. 3. Eight Years Of Progress, K Fitzgerald
Journal of the Department of Agriculture, Western Australia, Series 4
REGENERATION of degraded areas in regions of marginal rainfall is a slow process under the best of conditions, but on the Ord River Catchment, where much top-soil had been removed, the problem was unusually severe.
In many areas top-soil will have to be rebuilt before vegetation can be re-established.
This will be a long, slow process and regeneration will proceed through gradual plant succession from the "pioneer" annual species through to the permanent and more productive perennial species needed for a stable catchment area.
Planning Flood Control Measures By Digital Computer, James Norris Cline, L. Douglas James
Planning Flood Control Measures By Digital Computer, James Norris Cline, L. Douglas James
KWRRI Research Reports
The purpose of this study was to develop adequate guidelines whereby those interested in flood control planning would be able to apply a pair of digital computer programs known as the University of Kentucky Flood Control Planning Programs to ease the computational burden of evaluating specific flood control situations. Program II determines the economically optimum combination of channel improvement, land use restriction, and flood proofing for flood damage abatement. Program III also incorporates reservoir storage into the planning process. The Programs are not intended to provide a finished design but rather to select the optimum combination of flood control measures …
Ecological Study Of The Effects Of Strip Mining On The Microbiology Of Streams, Ralph H. Weaver, Harry D. Nash
Ecological Study Of The Effects Of Strip Mining On The Microbiology Of Streams, Ralph H. Weaver, Harry D. Nash
KWRRI Research Reports
The microflora of Cane Branch of Beaver Creek in McCreary County, Kentucky, which drains an area that was strip-mined between 1955 and 1959, was studied and compared with that of Helton Branch which drains a comparable area where there has been no mining. Differences include: the establishment of Ferrcbacillus ferrooxidans, for which procedures were developed for direct colony isolation from the stream; fewer saprophytic bacteria; more numerous and more diversified filamentous and unicellular fungi; and characteristic differences in algal flora. Representatives of 42 genera of filamentous fungi were identified. Of these, 21 were isolated only from Cane Branch. Representatives of …
The Effects Of Geographical And Climatic Setting On The Economic Advantages Of Alternative Flood Control Measures, Clyde R. Dempsey, L. Douglas James
The Effects Of Geographical And Climatic Setting On The Economic Advantages Of Alternative Flood Control Measures, Clyde R. Dempsey, L. Douglas James
KWRRI Research Reports
It has long been realized that tributary urban development and channel improvement greatly affect the flow regime in a given watershed. A previous study used the Stanford Watershed Model to derive relationships expressing how the flood peaks in Sacramento, California, might be expected to vary with changing conditions of urbanization, channelization, and tributary drainage area. In order to observe the effects of climatic setting and geographical location on these relationships, the same type of analysis was applied to a drainage area near Louisville, Kentucky.
If reservoir storage is to be considered in a flood control program, it is necessary to …
Water Quality Study Of Lake Mead, Dale A. Hoffman, Paul R. Tramutt, Frank C. Heller, Bureau Of Reclamation
Water Quality Study Of Lake Mead, Dale A. Hoffman, Paul R. Tramutt, Frank C. Heller, Bureau Of Reclamation
Publications (WR)
This report presents Lake Mead Water quality data obtained from 1964 to 1966. The effect of filling Lake Powell on the water quality of Lake Mead is evaluated. General limnological principles and the present limnology of Lake Mead are discussed. Lake Mead has a warm monomictic annual temperature cycle characterized by summer stratification, fall overturn leading into a continuous circulation throughout the winter; temperatures never fall below 39 deg F (4 deg C). During stratification, lower dissolved oxygen values were recorded in the thermocline than in the epilimnion and hypolimnion. Mineral content increases from the upper to the lower end …
Definite Plan Report On Southern Nevada Water Project, Nevada (First Stage): Project Development Report, U.S. Bureau Of Reclamation
Definite Plan Report On Southern Nevada Water Project, Nevada (First Stage): Project Development Report, U.S. Bureau Of Reclamation
Publications (WR)
This report presents the results of definite plan studies of the Southern Nevada Water Project in Clark County, southeastern Nevada. Construction of this project was authorized under Public Law 89-292 dated October 22, 1965. Authorization of the Southern Nevada Water Project was based on a project plan outlined in the feasibility report of August 1963 as supplemented in April 1965. The definite plan studies have confirmed the general project plan of the 1963 report as supplemented but some important modifications are now contemplated as explained in Part IV.
The project will be constructed in three stages. Stage development is desirable …
Cattle : And The Ord Irrigation Project, W M. Nunn
Cattle : And The Ord Irrigation Project, W M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 4
No abstract provided.