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Articles 29701 - 29730 of 30775
Full-Text Articles in Entire DC Network
Phytoplankton Distribution And Water Quality Indices For Lake Mead (Colorado River), Robert D. Staker, Robert W. Hoshaw, Lorne G. Everett
Phytoplankton Distribution And Water Quality Indices For Lake Mead (Colorado River), Robert D. Staker, Robert W. Hoshaw, Lorne G. Everett
Publications (WR)
Phytoplankton samples were collected in Lake Mend 6 times from September 1910 to June 1971 for 8 stations at depths of 0. 3, 5, 10, 20, and 30 m. These samples were processed through a Millipore filter apparatus and 79 planktonic algae were identified. Algal divisions represented were Bacillariophyta, 42 species; Chlorophyta, 18 ; Cyanophyta, 9; Chrysophyta, 3; Cryptophyta, 3; Pyrrophyta, 2; and Euglenophyta, 2. Blue-green algae were dominant in late summer and fall; green algae, diatoms, and, cryptomonads in winter; and green algae in spring. The early summer flora was best represented by the Chlorophyta, Cryptophyta, and Chrysophyta. Palmer's …
Evaluation Of Duck Production On Waterfowl Production Areas In Northeast North Dakota, Gerald L. Heismeyer
Evaluation Of Duck Production On Waterfowl Production Areas In Northeast North Dakota, Gerald L. Heismeyer
Electronic Theses and Dissertations
An investigation of duck production on six Waterfowl Production Areas (WPA’s) in northeastern North Dakota was conducted during 1970-73. This investigation was conducted in conjunction with habitat-manipulation study by the Northern Prairie Wildlife Research Center that entailed prescribed burning of three WPA’s. Wetland habitat conditions, breeding populations and nesting were evaluated all four years. Brood observations were made during the last three years and nesting cover was evaluated during the last two years of investigation. Wetland habitat conditions were generally favorable during the first three years of investigation but in 1973 wetland conditions were extremely poor due to low precipitation …
Water Resources Planning, Social Goals, And Indicators: Methodological Development And Empirical Test, Henry P. Caulfield
Water Resources Planning, Social Goals, And Indicators: Methodological Development And Empirical Test, Henry P. Caulfield
Reports
A methodology for comprehensive evaluation of water resources development and use (Techcom) has been developed and partially field tested. A model of societal goals consists of nine primary goals successively articualted into increasingly specific subgoals. Achievement of subgoals is perceived as affected by measurable social indicators whose values are perturbed by water resources actions. Linking the elements of the goals taxon by connectives result in an evaluation system. historical, political and philosophical considerations of the proposed system are discussed in Part I. Part II describes the results of the Rio Grande of New Mexico test including public perception and weighting …
Slope Stability Of Overburden Spoil Dumps From Surface Phosphate Mines In Southeastern Idaho, Roland W. Jeppson, Robert W. Hill, C. Earl Israelsen
Slope Stability Of Overburden Spoil Dumps From Surface Phosphate Mines In Southeastern Idaho, Roland W. Jeppson, Robert W. Hill, C. Earl Israelsen
Reports
No abstract provided.
The Gulf-Atlantic Waterway: Instrument To Increase Profit Margins In The Jacksonville Area, Jacksonville Area Chamber Of Commerce Research Department, Jay A. Smith
The Gulf-Atlantic Waterway: Instrument To Increase Profit Margins In The Jacksonville Area, Jacksonville Area Chamber Of Commerce Research Department, Jay A. Smith
Waterways and wildlife
The purpose of this report is to reassess the economic value that the Gulf-Atlantic Waterway will have on Duval county. This will show the direct relationship on the Port and the indirect benefits to other segments in our economy. This is needed for three reasons: 1. The last economic study was completed by the Corps of Engineers with the assistance of Arthur D. Little, Inc., a national consulting firm, in 1962. So, it has been almost twelve years since an economic report has been started from scratch. 2. The economic reports in the past have been mainly concerned with cost/benefit, …
Water Resources News, Volume 6, No. 1, January 1974
Water Resources News, Volume 6, No. 1, January 1974
Water Current Newsletter
From the Desk of the Director
1974 Summer Institute
Water Resources Seminar Series
Energy Conference Proceedings Available
Feedlots Pollute Western Water
Geothermal Energy Dangerous
Water Funds on Ice
Insurance Sales Up But Not Final
REAP Funds May Freeze
River Moratorium Continued
Do-It-Yourself Dam Plan Approved
Environment and Energy Headed in Same Direction
Pavement with Ready-Made Holes
Research Review: Biophysical Control of Water Loss
Component Group Report
Journal of the Minnesota Academy of Science
No abstract provided.
Fugitive Particulate From Highway Construction, Kennard F. Kosky
Fugitive Particulate From Highway Construction, Kennard F. Kosky
Retrospective Theses and Dissertations
National ambient air quality standards for particulate matter have been promulgated since April, 1971. While effects of stationary sources on these standards have been examined, little research has been accomplished on the effects of fugitive particulate. This thesis examines the environmental impact of a fugitive dust source, Highway Construction. Using the High-Volume reference method for particulate sampling, the effect of Highway construction was determined. An analysis of concentrations, distance influences, meteorological influences, particle sizes and construction influences is presented. The data obtained from this study indicates the major influence of concentrations is a function of distance and sampling height. Particle …
Electromagnetic Fields In Water Treatment, Robert H. Fagan
Electromagnetic Fields In Water Treatment, Robert H. Fagan
Retrospective Theses and Dissertations
Properties and characteristics of colloidal systems are reviewed with a discussion of colloid systems to be found in natural and wastewaters. Current electric and magnetic field theory are reviewed and summarized to provide practical application of the theory to engineering problems in the environmental field. Literature of colloidal reactions to electrical and magnetic fields is discussed and reviewed to ascertain areas of potential application of electric and magnetic phenomena to natural and wastewater treatment systems having objectionable colloid suspensions. It is concluded that application of electrical fields (electrophoresis) does not currently hold much promise for practical applications in water treatment …
Toward The Future Forest: Applying Physiology And Genetics To The Domestication Of Trees, J.H Rediske, F. Thomas Ledig, Peter S. Carlson, Thomas B. Rice, Richard P. Pharis
Toward The Future Forest: Applying Physiology And Genetics To The Domestication Of Trees, J.H Rediske, F. Thomas Ledig, Peter S. Carlson, Thomas B. Rice, Richard P. Pharis
Yale School of the Environment Bulletin Series
No abstract provided.
Occupational Choice And Employment Stability Among Forest Workers, Philip L. Cottel
Occupational Choice And Employment Stability Among Forest Workers, Philip L. Cottel
Yale School of the Environment Bulletin Series
No abstract provided.
Osha's Impact On Industry, Paul Christ Noller
Osha's Impact On Industry, Paul Christ Noller
Retrospective Theses and Dissertations
On December 29, 1970, the President signed into law the Williams-Steiger Occupational Safety and Health Act (OSHA) of 1970, which became effective April 28, 1971. The purpose of this act is to assure safe and healthful working conditions for the nation's wage earners. The law provides that each employer has the basic duty to furnish his employees a place of employment which is safe from recognized hazards that cause death or serious physical harm. The implementation of the OSHA Act has been the most extensive intervention into the day-to-day operation of American Industry in history. Originally, employers expressed doubt that …
Evaluative Study Of A Proposed Municipal Pyrolysis Installation, Leon Breckenridge
Evaluative Study Of A Proposed Municipal Pyrolysis Installation, Leon Breckenridge
All Master's Theses
This paper discusses an alternative to sanitary landfills as a method of disposing of municipal solid waste. The alternative means is a pyrolysis-gasification process for the disposal of solid wastes and the production of energy in the form of a gas of relatively low energy content.
Characteristics of typical municipal solid wastes are discussed. A discussion of the pyrolysis process is included along with other pertinent technical information. A method for utilization of the energy produced from pyrolysis is presented.
Evaluation And Impact Of Planning And Development Under The Washington State Shoreline Management Act, Donald S. Skone
Evaluation And Impact Of Planning And Development Under The Washington State Shoreline Management Act, Donald S. Skone
All Master's Theses
The Shoreline Management Act of 1971, ballot proposition 43B, was approved by the voters of the State of Washington on November 7, 1972. The Act is designed to prevent uncoordinated and piecemeal development of the shorelines in Washington State. This study focuses on the impact of the Shoreline Management Act on development of the shorelines. Emphasis is placed on the non-development nature and intent of the Act. Included is a sample study of implementation of the Act under the Guidelines.
The Mormon Role In Irrigation Beginnings And Diffusions In The Western States: An Historical Geography, Kelly C. Harper
The Mormon Role In Irrigation Beginnings And Diffusions In The Western States: An Historical Geography, Kelly C. Harper
Theses and Dissertations
Irrigation has played an important part in the development of the Western States. Its beginnings have often been associated with the Mormon settlement in Utah. However, irrigation had its inception in the West long before the Mormons came to the Great Basin in 1847. The spatial extent of irrigation before this date included limited acreage in nearly every Western State.
Before their arrival in the Great Basin the Mormons had become acquainted with irrigation methods. Knowledge of irrigation had diffused to them primarily from the Spanish in the Southwest. Thus, they were well prepared to begin their irrigation enterprises in …
Forage Production From Shrubs On Saline Land, C V. Malcolm
Forage Production From Shrubs On Saline Land, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
In the first volume of the Journal of the Department of Agriculture in the year 1900, the results of experiments at Tulare Experiment Station in California on the growing of Australian saltbushes are reported.
Seed was first sent from Australia by Baron von Mueller in June, 1881. Three species of saltbush (A. semibaccata, A. numularia and A. vesicaria) are all reported to have grown well.
Although C. A. Gardner in 1929 suggested the growing of saltbushes for forage, the earliest and clearest recommendations are those of Teakle and Burvill in 1945.
Early research tended to concentrate mainly on the possibility …
The Water Quality And Benthic Macroinvertebrate Fauna Of Lake Charleston, Coles County, Illinois, Paul Barding
The Water Quality And Benthic Macroinvertebrate Fauna Of Lake Charleston, Coles County, Illinois, Paul Barding
Masters Theses
The benthic macroinvertebrate fauna and 15 water quality parameters for five sites on Lake Charleston, Coles County, Illinois were examined for 26 weeks from March 14 through September 5, 1974. None of the water quality parameters studied showed sufficient deviations at any particular area on the lake to merit demarcated water quality zonation. The lake, with its continuous mixing and shallow depth, represented a fairly stable and continuous environment. The benthic macroinvertebrate fauna was determined as fairly diverse and some indication of seasonal variation was apparent. No significant compositional variation over different areas of the lake was found, also indicating …
Effects Of Temperature On The Toxicity Of Oil Refinery Waste, Sodium Chlorate, And Treated Sewage To Fathead Minnows, Curt C. Shifrer, E. Joe Middlebrooks, Donald B. Porcella, William F. Sigler
Effects Of Temperature On The Toxicity Of Oil Refinery Waste, Sodium Chlorate, And Treated Sewage To Fathead Minnows, Curt C. Shifrer, E. Joe Middlebrooks, Donald B. Porcella, William F. Sigler
Reports
A literature review and experiments were conducted to determine the effects of temperature on the toxicity of three materials to fish (fathead minnows,
Steady Flow Analysis Of Pipe Networks: An Instructional Manual, Roland W. Jeppson
Steady Flow Analysis Of Pipe Networks: An Instructional Manual, Roland W. Jeppson
Reports
No abstract provided.
A Study Of The Effectiveness Of Water Resources Planning Groups A Final Report, Daniel H. Hoggan, Jim Mulder, Sarah Jane Taylor, Dennis E. Oaks, Brent Somers, Raymond L. Richardson
A Study Of The Effectiveness Of Water Resources Planning Groups A Final Report, Daniel H. Hoggan, Jim Mulder, Sarah Jane Taylor, Dennis E. Oaks, Brent Somers, Raymond L. Richardson
Reports
Information and recommendations were developed pertaining to the organization of regional and river basin water planning studies, useful to river basin commissions and others responsible for such studies. The approach that was used included four basic components: (1) conceptualization of a planning model, based on an analysis of planning theory and organizational literature, (2) analysis and review of historical trends in water resources planned, (3) examination and comparative evaluation of 15 river basin planning studies, and (4) case studies of two planning efforts selected from the 15 examined in order to perform a more detailed analysis and to gain information …
Precipitation Augmentation Potential By Cloud Seeding In The State Of Utah, Geoffrey E. Hill
Precipitation Augmentation Potential By Cloud Seeding In The State Of Utah, Geoffrey E. Hill
Reports
No abstract provided.
Hydrologic Model Studies Of The Mt. Olympus Cove Area Of Salt Lake County, J. Paul Riley, Vernon J. Rogers, George B. Shih
Hydrologic Model Studies Of The Mt. Olympus Cove Area Of Salt Lake County, J. Paul Riley, Vernon J. Rogers, George B. Shih
Reports
Urban development on any natural drainage basin causes marked changes in the runoff characteristics of the basin. Urbanization alters natural drainage channels and reduces average infiltration rates. Thus, flood conditions are enhanced both within the urbanizing area itself and at downstream locations, where existing channels might not be able to cope with the increased rates of water flow. The Olympus Cove area in Salt Lake County is undergoing rapid urban development, and potential flood hazards within the area and at downstream locations are thereby increasing. Recognizing this situation, officials of the Sale Lake County took the initiative in organizing an …
A Continuous Flow Kinetic Model To Predict The Effects Of Temperature On The Toxicity Of Waste To Algae, James H. Reynolds, Joe E. Middlebrooks, Donald B. Porcella, William J. Grenney
A Continuous Flow Kinetic Model To Predict The Effects Of Temperature On The Toxicity Of Waste To Algae, James H. Reynolds, Joe E. Middlebrooks, Donald B. Porcella, William J. Grenney
Reports
A continuous flow kinetic model to describe and predict the effects of temperature on the toxicity of a specific oil refinery waste to the green alga,
An Analysis Of Water Research Programs Of The Utah Water Research Laboratory And Center For Water Resources Research, Water Resources Research Citizen Advisory Panel
An Analysis Of Water Research Programs Of The Utah Water Research Laboratory And Center For Water Resources Research, Water Resources Research Citizen Advisory Panel
Reports
Foreward: As a means of keeping water research programs at Utah State University responsive to needs in terms of both timeliness and emphasis, President Glen L. Taggart, in 1970, requested a number of Utah citizens to serve as a panel to give counsel and advice to the Utah Water Research Laboratory and Center for Water Resources Research. Membership of this 16-member panel represents a broad spectrum of water-related experience gained from a variety of professional backgrounds and organizational affiliations. The objective was to keep the panel small enough for it to be a "working" group but large enough to obtain …
Review Paper: Evaluation Of Techniques For Algae Removal From Wastewater Stabilization Ponds, E. Joe Middlebrooks, Donald B. Porcella, Robert A. Gearheart, Gary R. Marshall, James H. Reynolds, William J. Grenney
Review Paper: Evaluation Of Techniques For Algae Removal From Wastewater Stabilization Ponds, E. Joe Middlebrooks, Donald B. Porcella, Robert A. Gearheart, Gary R. Marshall, James H. Reynolds, William J. Grenney
Reports
Introduction: Approximately 90 percent of the wastewater lagoons in the United States are located in small communities of 5,000 people or less. These communities, many with an average daily wastewater flow of only 175,000 - 200,000 gallons, do not have the resources to keep man at the lagoon sites throughout the day (38). A high degree of technical knowhow is usually lacking in these communities. Often only periodic inspection or maintenance is carried out by the general municipal work force. Therefore, the development of a relatively inexpensive method that does not require sophisticated and constant operation or extensive maintenance is …
Planning For Water Quality In The Virgin River System In The State Of Utah, Utah Water Research Laboratory
Planning For Water Quality In The Virgin River System In The State Of Utah, Utah Water Research Laboratory
Reports
No abstract provided.
Planning For Water Quality In The Bear River System In The State Of Utah, Utah Water Research Laboratory
Planning For Water Quality In The Bear River System In The State Of Utah, Utah Water Research Laboratory
Reports
No abstract provided.
Planning For Water Quality In The Sevier River System In The State Of Utah
Planning For Water Quality In The Sevier River System In The State Of Utah
Reports
No abstract provided.
Intermittent Sand Filtration To Upgrade Existing Wastewater Treatment Facilities, Gary R. Marshall, E. Joe Middlebrooks
Intermittent Sand Filtration To Upgrade Existing Wastewater Treatment Facilities, Gary R. Marshall, E. Joe Middlebrooks
Reports
No abstract provided.
Waste Load Allocation For The Bear River Basin As Of October, 1973
Waste Load Allocation For The Bear River Basin As Of October, 1973
Reports
No abstract provided.