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University of Arkansas, Fayetteville

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Articles 511 - 540 of 587

Full-Text Articles in Oceanography and Atmospheric Sciences and Meteorology

Pre- And Post Impoundment Ichthyoparasite Succession In A New Arkansas Reservoir, David A. Becker, William D. Carr, Robert G. Heard, Donald G. Cloutman, Perry D. Holmes, Wallace A. Evans, Mitchell D. Norman, Wilbur B. Owen Jr. Jan 1978

Pre- And Post Impoundment Ichthyoparasite Succession In A New Arkansas Reservoir, David A. Becker, William D. Carr, Robert G. Heard, Donald G. Cloutman, Perry D. Holmes, Wallace A. Evans, Mitchell D. Norman, Wilbur B. Owen Jr.

Arkansas Water Resources Center Technical Reports

Helminth and crustacean parasites from 2,387 Micropterus dolomieui, M. punctulatus, and M. salmoides were utilized to monitor annual pre- and postimpoundment succession patterns spanning eight con- tinuous years in Beaver Reservoir, Arkansas. Incidence of infection by ichthyoparasites with direct life cycles (monogenetic trematodes, leeches, and crustaceans) generally increased following impoundment, although leeches remained relatively constant. Exceptions to this general pattern occurred. Incidence of ichthyoparasites with indirect life cycles (digenetic trematodes, cestodes, acanthocephalans, and nematodes) decreased immediately following impoundment with subsequent increases to a point equal or above that of preimpoundment, although exceptions occurred. Time for species adaptation to the reservoir …

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Final Report Buffalo National River Ecosystems Part Iv, R. E. Babcock, E. E. Dale, R. L. Meyer, D. G. Parker, E. G. Smith, M. D. Springer Jan 1978

Final Report Buffalo National River Ecosystems Part Iv, R. E. Babcock, E. E. Dale, R. L. Meyer, D. G. Parker, E. G. Smith, M. D. Springer

Arkansas Water Resources Center Technical Reports

Sampling point locations and analytical procedures remained unchanged from those outlined in previous Buffalo National River Ecosystem reports. The only significant change in analytical procedures was a reversion to the glass fiber filter method for collection and extraction of samples for chlorophyll analysis. This change was neeessitated by a need for filtering a larger volume to obtain enough chlorophyll for an accurate measurement. Samples were collected monthly from April 9 through December 30. No samples were taken in January or February due to the extremely uncertain traveling conditions caused by the frequent snows. Prior research indicates that the December 30 …

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An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume I - Introduction, Summary And Conclusions, And Recommendations, Arkansas Water Resources Research Center Jan 1978

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume I - Introduction, Summary And Conclusions, And Recommendations, Arkansas Water Resources Research Center

Arkansas Water Resources Center Technical Reports

The foundation for the development of the Arkansas River was laid with the authorization of many upstream reservoirs in the comprehensive River and Harbor Act of 1946 signed by President Truman. Subsequent authorizations were forthcoming and work began on many of the bank stabilization facilities in 1950 and on the major structures in 1957. The current McClellan-Kerr Arkansas River Navigation System was substantially completed in 1972. The authorized multiple-purpose plan for the Arkansas River and tributaries provided for the construction of coordinated developments in the interests of navigation, hydroelectric power, flood control, bank stabilization, and related benefits including recreation and …

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Radionuclide Concentrations In The Arkansas River Upstream And Downstream From The Nuclear Power Generating Facility, D. M. Chittenden, Ii Jan 1978

Radionuclide Concentrations In The Arkansas River Upstream And Downstream From The Nuclear Power Generating Facility, D. M. Chittenden, Ii

Arkansas Water Resources Center Technical Reports

No abstract provided.

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Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore Dec 1977

Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore

Arkansas Water Resources Center Technical Reports

No abstract provided.

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Water Conservation In Industrial Filtration Operations, Jim L. Turpin Sep 1977

Water Conservation In Industrial Filtration Operations, Jim L. Turpin

Arkansas Water Resources Center Technical Reports

The washing of a solute from filter cakes was investigated for both saturated and unsaturated washing conditions. Systems used in this experimental study were 0.065 NaCl solution as the filtrate in an aluminum hydrate filter cake and 0.1 Normal HCL solution as the filtrate in a column packed with glass beads. The filtrate concentration as a function of the flow rate of wash water and of the volume of effluent from the packed bed was measured. The amounts of filtrate removed from the bed during saturated washing, and washing employing repetitive steps of saturation followed by evacuation were compared. Also, …

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Population Dynamics And Species Diversity Of Ichthyo-Parasitofauna Of The Buffalo National River, Raj V. Kilambi, David A. Becker Aug 1977

Population Dynamics And Species Diversity Of Ichthyo-Parasitofauna Of The Buffalo National River, Raj V. Kilambi, David A. Becker

Arkansas Water Resources Center Technical Reports

The Buffalo River originates in the Ozark plateau in Newton County, Arkansas. This magnificent Ozarkian wilderness river is about 238 km long and flows north-eastward to its confluence with the White River. The Buffalo River drains 3,465 km2 and has some 30 named tributaries. In its upper reaches, huge multicolored cliffs extend nearly 213 m above the river as it flows through mountainous countryside which reaches an elevation of 732 m. Within its watershed may be found 700 species of plant life, a habitat for 250 species of birds, and a variety of game animals. In its aquatic habitat …

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An Investigation Of Using Derivation Reaction Gas Chromatography To Measure Anionic Water Quality Parameters, Richard H. Hanson Jun 1977

An Investigation Of Using Derivation Reaction Gas Chromatography To Measure Anionic Water Quality Parameters, Richard H. Hanson

Arkansas Water Resources Center Technical Reports

A new analytical method has been developed which provides researchers with another way to measure orthophosphate content in aqueous samples. The reaction gas chromatographic system was capable of analyzing orthophosphate in the range from 0.25 - 5.0 micrograms of P in 50 microliters of aqueous sample. Flame ionization proved to be the most successful detector. The primary advantage of this technique was the small volume of sample required.

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Buffalo National River Ecosystem - Part Iii, M. D. Springer, E. B. Smith, D. G. Parker, R. L. Meyer, E. E. Dale, R. E. Babcock Jun 1977

Buffalo National River Ecosystem - Part Iii, M. D. Springer, E. B. Smith, D. G. Parker, R. L. Meyer, E. E. Dale, R. E. Babcock

Arkansas Water Resources Center Technical Reports

Samples for water quality analyses and phycological studies were taken from the nine standard sampling locations on the Buffalo River nine times during the period from March 1976 through February 1977. The April-June 1976 samples represent nearly identical conditions throughout the spring period; therefore, emphasis was placed on taxonomic research. As the early January sample was considered sufficient~y reflective of stable winter conditions, the December and February periods were. used for detailed microscopic examination of the rich and diverse diatom flora that was found in the river this year. A total of 273 taxa of diatoms were identified from the …

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Landsat Linear Trend Analysis - A Tool For Groundwater Exploration In Northern Arkansas, H. C. Macdonald, Kenneth F. Steele, Elizabeth Gaines Jan 1977

Landsat Linear Trend Analysis - A Tool For Groundwater Exploration In Northern Arkansas, H. C. Macdonald, Kenneth F. Steele, Elizabeth Gaines

Arkansas Water Resources Center Technical Reports

Intelligent development of groundwater resources is a process that requires a thorough understanding of the availability and movement of groundwater. In northern Arkansas knowledge of the deep aquifers is fairly limited, perhaps because economic factors and uncertain yields have discouraged exploitation. The development of these deeper aquifers to their fullest potential as reliable water sources depends on the delineation of high yield areas, a process that may be facilitated by linear trend analysis as outlined in this study. Satellite and photolineament maps of the 13 counties were prepared by use of LANDSAT images and Agricultural Stabilization and Conservation Service photo …

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Northern Arkansas Groundwater Inventory, H. Macdonald, Doy L. Zachry, Hugh Jeffus Jan 1977

Northern Arkansas Groundwater Inventory, H. Macdonald, Doy L. Zachry, Hugh Jeffus

Arkansas Water Resources Center Technical Reports

No abstract provided.

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State Of The Art Of Technology For Rural Water System Development, R. T. Alguire, Joe F. Nix, H. C. Macdonald, Robert E. Babcock Oct 1976

State Of The Art Of Technology For Rural Water System Development, R. T. Alguire, Joe F. Nix, H. C. Macdonald, Robert E. Babcock

Arkansas Water Resources Center Technical Reports

The objective of this study was to review the current state of the art in rural water system technology. This was to be accomplished by a literature review of the Water Resources Scientific Information Center (WRSIC), National Technical Information Service (NTIS), and Smithsonian Science Information Exchange (SSIE). This literature search was to be augmented by interviews with consulting engineers, operating system managers and industrial literature. Both groundwater and surface water technology was to be reviewed. The technology was then to be grouped into four classes: (1) current technology, (2) technology which has been developed, but not currently being used, (3) …

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Improving Design Criteria For Septic Tank Systems, Dee Mitchell Aug 1976

Improving Design Criteria For Septic Tank Systems, Dee Mitchell

Arkansas Water Resources Center Technical Reports

The failure of septic tanks in treatment of wastewater has been responsible for causing health hazards due to contamination and pollution of groundwater and surface waters used for drinking water supplies. Most of these failures have been in the absorption field. Little or no actual research has been performed to establish design criteria for septic tank absorption fields to be used by local, state or federal Health Agencies or Pollution Control Agencies. Historically, almost all design criteria has beed based on a percolation test and the number of bedrooms to be served. Both of these methods have repeatedly been shown …

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An Aqueous Environmental Simulation Model For Mid-South Lakes And Reservoirs, Louis J. Thibodeaux Jun 1976

An Aqueous Environmental Simulation Model For Mid-South Lakes And Reservoirs, Louis J. Thibodeaux

Arkansas Water Resources Center Technical Reports

Quantitative relationships and associated computer program has been developed to simulate some of the major physical, chemical and biological processes occuring within the aqueous phase of lakes and reservoirs. The model was developed, in part, to study the eutrophic development of these water bodies. Emphasis is upon lakes in the Mid-South U.S.A. The physical model reflects the general environment in this region and includes a single stratified period. The chemical subsystem includes nitrogen, phosphorus, oxygen and carbon. The biological subsystem includes phytoplankton, zooplankton, omnivorous fish, carnivorous fish and aerobic bacteria. The model differential equations are solved numerically with the IBM …

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Buffalo National River Ecosystems - Part Ii, R. E. Babcock, E. E. Dale, H. C. Macdonald, R. L. Meyer, D. G. Parker, E. B. Smith, K. F. Steele Mar 1976

Buffalo National River Ecosystems - Part Ii, R. E. Babcock, E. E. Dale, H. C. Macdonald, R. L. Meyer, D. G. Parker, E. B. Smith, K. F. Steele

Arkansas Water Resources Center Technical Reports

The priorities were established for the Buffalo National River Ecosystem Studies through meetings and correspondence with Mr. Roland Wauer and other personnel of the Office of Natural Sciences, Southwest Region of the National Park Service. These priorities were set forth in the appendix of contract no. CX 700050443 dated May 21, 1975.

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Research For The Development Of Guidelines For Conducting And Analyzing An Environmental Water Quality Study To Determine Statistically Meaningful Results, Melvin D. Springer Mar 1976

Research For The Development Of Guidelines For Conducting And Analyzing An Environmental Water Quality Study To Determine Statistically Meaningful Results, Melvin D. Springer

Arkansas Water Resources Center Technical Reports

This report presents and discusses the basic statistical models and methods which are useful to researchers in the field of water resources research, as well as in other fields. These models and methods are presented from the standpoint of type (parametric and nonparametric - or distribution free) and purpose (e.g., simultaneous comparison of several means, comparison of two or more variances, establishment of a difference between two means with a specified confidence, etc.). The material is presented with emphasis primarily upon methodology, including the necessary assumptions upon which each model is based. No derivations or proofs are given, since these …

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An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iv - The Effects Upon The Benthic Associations, Louise Russert Kraemer Jan 1976

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iv - The Effects Upon The Benthic Associations, Louise Russert Kraemer

Arkansas Water Resources Center Technical Reports

The huge and increasing volume of dredged materials being moved in and from the bottoms of waterways of the U.S. is probably well known to the reader. Lee and Plumb (1974) distinguish between the 2 forms of dredging: (1) mining the bottom sediments (as in shell dredging), and (2) developing and maintaining navigable waterways. They indicate some 380,000,000 cubic yards are dredged annually in this country; maintenance dredging accounting for about 80,000,000 cy, and new construction for about 300,000,000 cy.* These figures (based on 5 yr. averages) do not include dredging by private companies. Smith (1975) comments: "With federal dredging …

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The Fishes Of Washinton County, Arkansas, Donald G. Cloutman, Larry L. Olmsted Jan 1976

The Fishes Of Washinton County, Arkansas, Donald G. Cloutman, Larry L. Olmsted

Arkansas Water Resources Center Technical Reports

No abstract provided.

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Appendices To An Aqueous Environmental Simulation Model For Mid-South Lakes And Reservoirs, Louis J. Thibodeaux Jan 1976

Appendices To An Aqueous Environmental Simulation Model For Mid-South Lakes And Reservoirs, Louis J. Thibodeaux

Arkansas Water Resources Center Technical Reports

The program simulates some of the major physical, chemical and biological processes occuring within the aqueous phase of lakes and reservoirs. The program was developed to study the eutrophic development of these water bodies.

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An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iii-The Effects Upon The Zooplankton Associations, Edgar D. Short, Eugene H. Schmitz Jan 1976

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iii-The Effects Upon The Zooplankton Associations, Edgar D. Short, Eugene H. Schmitz

Arkansas Water Resources Center Technical Reports

The primary purpose of the zooplankton phase of the coordinated study was to attempt to evaluate the effects of dredging operations on the abundance, distribution, composition and complexity of the zooplankton communities within the aquatic system of the Arkansas River. The other phases of investigation include fish, macroinvertebrates, phytoplankton and some physico-chemical parameters. The lack of baseline data, needed for measurement of previous ecological conditions from which to detect past and future changes, proved to be a major impediment to any evaluation. Although the study involved only about 240 miles of the river in Arkansas, it should serve as an …

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An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume Ii - Effects Upon The Phytoplankton Associations, Myra Mcnutt, Richard L. Meyer Jan 1976

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume Ii - Effects Upon The Phytoplankton Associations, Myra Mcnutt, Richard L. Meyer

Arkansas Water Resources Center Technical Reports

Phytoplankton are a major source of primary production in aquatic ecosystems and constitute one of the most important assemblages of the biotic community. These organisms are the basic level of the trophic pyramid upon which other organisms are dependent. The development, maintenance, and environmental influence of phytoplankton in and on the aquatic ecosystem has been a subject of interest and concern for many years. Most of the studies concerning the nature and distribution of phytoplankton have been confined to lacustrine systems. Hutchinson (1967), citing several lake studies, sutmarized various aspects of the physical and chemical factors associated with phytoplankton. These …

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An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume V - The Effects Upon The Fish Population, Thomas M. Buchanan Jan 1976

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume V - The Effects Upon The Fish Population, Thomas M. Buchanan

Arkansas Water Resources Center Technical Reports

The Arkansas River extends for 1,450 miles from the eastern slopes of the Rocky Mountains in Colorado, southeasterly through Kansas, Oklahoma, and Arkansas, where it enters the Mississippi River in Desha County. The 448 mile navigation channel which was constructed on the lower portion of this river includes portions of two of its major tributaries, the Verdigris River in Oklahoma and the lower White River in Arkansas. The Arkansas portion of this navigation system consists of three different segments: (1) the lower White River, from its confluence with the Mississippi River to 10 miles upstream, (2) the Arkansas Post Canal, …

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An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System: Volume I - Introduction, Summary And Conclusions, And Recommendations, Myra Mcnutt, T. M. Buchanan, L. R. Kraemer, R. L. Meyer, E. H. Schmitz Jan 1976

An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System: Volume I - Introduction, Summary And Conclusions, And Recommendations, Myra Mcnutt, T. M. Buchanan, L. R. Kraemer, R. L. Meyer, E. H. Schmitz

Arkansas Water Resources Center Technical Reports

The Arkansas River originates in the eastern slopes of the Rocky Mountains near Leadville, Colorado, and extends through Kansas, Oklahoma, and Arkansas, where it flows into the Mississippi River. The Arkansas River is approximately 1,450 miles in length and drains a total area of 160,500 square miles. The river and its tributaries have been developed for navigation, flood control, and hydro-electric power, as well as recreational purposes under the River and Harbor Act of July 24, 1946. The development of the Arkansas River for recreational use will be completed in the near future. The McClellan-Kerr Arkansas River Navigation System was …

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Trace Metals And Major Elements In Water-Soluble Rocks Of Northwest Arkansas, George H. Wagner, Kenneth F. Steele, Doy L. Zachry Jr. Oct 1975

Trace Metals And Major Elements In Water-Soluble Rocks Of Northwest Arkansas, George H. Wagner, Kenneth F. Steele, Doy L. Zachry Jr.

Arkansas Water Resources Center Technical Reports

Trace metals in limestone are potential water contaminants because they can enter the ground water when the limestone is dissolved by carbonic acid and other naturally occurring acids. Four local limestones, the St. Joe and Pitkin Formations (Mississippian) and the Brentwood and Kessler Members of the Bloyd Formation (Pennsylvanian) were sampled in a five county area in Northwest Arkansas. Atomic absorption analyses were made for Na, K, Mg, Ca, Zh, Cu, Ba, Fe, Co, Cr, Ni, Mn, Li and Sr on the acid soluble material of the samples. All the limestones are relatively pure CaCO3 with Pitkin the purest, 93.4%. …

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Trace Element Composition Of Stream Sediments An Integrating Factor For Water Quality, Kenneth F. Steele, Harold C. Macdonald, George H. Wagner, William S. Bowen Jun 1975

Trace Element Composition Of Stream Sediments An Integrating Factor For Water Quality, Kenneth F. Steele, Harold C. Macdonald, George H. Wagner, William S. Bowen

Arkansas Water Resources Center Technical Reports

Bottom sediments, suspended sediments, and water were sampled along 130 miles of the Buffalo River in northern Arkansas. The water and acid extracts of the suspended sediments and the minus 95 mesh fraction of the bottom sediments were analyzed by atomic absorption spectrometry. All samples were analyzed for Na, K, Mg, Ca, Zn, Cd, Cu, Pb, Fe, Co, Cr, Ni, and Mn. Selected bottom samples also were analyzed by As, Hg, and Zr. Zr was determined by x-ray fluorescence. Li and Sr were determined for selected water and suspended sediment samples. There is a general decrease downstream in Fe, Cu, …

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Survival And Growth Rate Of Channel Catfish As A Function Of Dissolved-Oxygen Concentration, R. W. Raible Jun 1975

Survival And Growth Rate Of Channel Catfish As A Function Of Dissolved-Oxygen Concentration, R. W. Raible

Arkansas Water Resources Center Technical Reports

Channel catfish were raised in water-recirculating systems for several periods of about six months duration each. Initial stock was fingerling size fish (10 to 20 grams). At dissolved-oxygen levels below 2.5 parts per million, mortality was high. Fish raised in tanks held at dissolved-oxygen levels between 3.0 and 6.8 parts per million showed increased gains of weight for each increment of added oxygen. Weight gains were as much as 50 percent higher at 6.8 parts per million compared with weights at 3.0 parts per million. Feed conversion was good in all cases. When feeding was limited to demand, feed conversion …

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Movement Of Pesticides In The Soil Water Fertilizer System, H. Don Scott Jun 1975

Movement Of Pesticides In The Soil Water Fertilizer System, H. Don Scott

Arkansas Water Resources Center Technical Reports

A theoretical and experimental study of the transport of pesticides was conducted in several Arkansas soils with metribuzin, a herbicide. In a field study, chloride and metribuzin were applied to a Captina silt loam under maximum leaching conditions and their redistribution was compared with that of soil water. Metribuzin was found in significantly detectable quantities to a depth of 61 cm; the largest concentrations were detected in the surface 23 cm and particularly in the 0-5 cm increment. Two days after application 72.6 and 33.6% could be detected in the vegetation and no-vegetation plots. The metribuzin half life was 7.88 …

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Pathogenic Free-Living Amoebae In Arkansas Recreational Waters, Leon W. Bone, David A. Becker Jun 1975

Pathogenic Free-Living Amoebae In Arkansas Recreational Waters, Leon W. Bone, David A. Becker

Arkansas Water Resources Center Technical Reports

Selected recreational waters of Arkansas were sampled for pathogenic free-living limax amoebae. Water quality parameters were determined for correlation with amoebic population densities and species diversity. Cultural criteria and animal inoculation revealed no pathogenic strains. The feasibility of introduction and/or induction of pathogenic amoebic strains by environmental factors necessitates further ecological investigaitons.

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Biochrome Analysis As A Method For Assessing Phytoplankton Dynamics Phase Ii, Richard L. Meyer Jun 1975

Biochrome Analysis As A Method For Assessing Phytoplankton Dynamics Phase Ii, Richard L. Meyer

Arkansas Water Resources Center Technical Reports

Selected chemical, physical and biological parameters were determined for a man-made lake, Beaver Lake, on the White River of Arkansas and Missouri. The research program determined the qualitative and quantitative aspects of the temporal and spatial distribution of the algal subcommunities. It was determined that the epipelic, epilithic, epizooic and metaphytic subcommunities had little influence on the euplanktonic subcommunity. The relationship between the qualitative and quantitative analysis of the biochromes chlorophyll-a, -b, and -c and the phytoplankton species clustered into biochrome sets is discussed. The temporal and spatial distributional patterns of temperature, oxygen, ammonia-N, nitrate-N, orthophosphate-P and silicates are described …

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Heat And Moisture Conduction In Unsaturated Soils, J. A. Havens, R. E. Babcock May 1975

Heat And Moisture Conduction In Unsaturated Soils, J. A. Havens, R. E. Babcock

Arkansas Water Resources Center Technical Reports

Mathematical models are developed for the prediction of heat transfer from hot water pipes buried in the soil. Heat transfer in the absence of moisture transfer is described as a function of the difference between the temperature of the pipe and the temperature of the soil surface. The energy balance is used to determine the longitudinal temperature distribution of the water. The method is extended to describe a system of equally spaced, parallel buried pipes. Soil temperature profiles around the pipes are presented. The model is used to calculate the land area that can be heated by an underground piping …

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