Physical Sciences and Mathematics Commons^™

An Evaluation Of The Fishery Resources Of The Thames River Watershed, Connecticut, Connecticut Department Of Environmental Protection

Storrs Agricultural Experiment Station

No abstract provided.

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

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 …

The Influence Of Roots On The Accuracy Of Soil-Moisture Measurements Taken With A Neutron Moisture Meter, Terry L. Andreessen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of roots on soil-moisture measurements taken with a neutron probe were studied. These effects were observed under three different soil-moisture conditions, with different sized roots, and with varying distances between the access tube and root. The moisture conditions used were air dry, field capacity, and saturated.

Large roots can greatly affect neutron soil-moisture measurements when the access hole is drilled through the root. Positive errors as large as 52 percent were found when the soil moisture was at field capacity. With dry and saturated conditions positive errors of 43 percent and 38 percent respectively, were found.

In most …

Evaluation Of Recovery In A Polluted Creek After Installation Of New Sewage Treatment Procedures, Robert A. Kuehne

KWRRI Research Reports

Response of Hickman Creek near Lexington, Kentucky to alleviation from serious sewage pollution was studied from January, 1973 through July, 1974. Wastes are now handled from an efficient secondary treatment facility and four sequential polishing lagoons before chlorination and discharge to West Hickman branch.

Physico-chemical tests gave no strong indication of residual pollution effects at the start of the study, approximately six months after the treatment facility opened. At low flow a slight oxygen sag, probably associated with algal growth in the lagoons, persists downstream from the outfall. Mean values for turbidity, nitrates and COD are somewhat higher at the …

Water Current, Volume 7, No. 4, April 1975

Water Current Newsletter

Why Plan for Water and Land Resource Management?
Duane Acker to Head Kansas State
Nebraska Water Quality Report
Funds Requested for MRBC Yellowstone Study
Agreement Reached on Water Marketing
Old West Governors Challenge Corps Power
Water Crisis Predicted
EPA Drinking Water Survey Shows Possible Carcinogens
Water Resources Scientific Information Center
National Drinking Water Advisory Council Named
Pollution Tax Urged
Research Review: Biological Control of Blue-Green Algae

Sodium, Potassium, Calcium And Magnesium Content Of Northwest Arkansas Rain Water In 1974, G. H. Wagner

Technical Reports

No abstract provided.

Water Current, Volume 7, No. 3, March 1975

Water Current Newsletter

From the Desk of the Director
Search for NWRRI Director Proceeding
New Address for Former NWRRI Director
Institute Publications
1975 Nebraska Water Conference Review
Underground Water Pumping Bill to Legislature
Environmental Specialist Joins MRBC Planning Staff
FY 1976 Proposed Water Budgets
Water Resources Council Begins Study on Cost Sharing
FEA Projects Rail and Barge Shortages for Coal Transport
Research Review: Biophysical Control of Water Loss
Butcher Named Water Research Director

Final Report: Buffalo National River Ecosystems, R. E. Babcock, H. C. Macdonald, D. G. Parker, Joe F. Nix, Kenneth F. Steele, Richard L. Meyer, R. W. Raible, D. A. Becker, R. V. Kilambi, E. H. Schmitz

Technical Reports

The objective of this study was to sample the Buffalo River on a seasonal basis for a year, in order to determine whether any potential water quality problems existed.

Water Current, Volume 7, No. 2, February 1975

Water Current Newsletter

From the Desk of the Director
Institute Director Resigns
Search for NWRRI Director Underway
NWRRI Research Seminar
Institute Publications
MRBC Water Resources Priorities Set
Safe Drinking Water Bill Signed
Graduate Study in Water Resources
Research Review: Investigation of Laser Ramen Spectroscopy for Analysis of Water Quality

Water Current, Volume 7, No. 1, January 1975

Water Current Newsletter

From the Desk of the Director
Conference Held on Research in Action
NWRRI Research Seminar
Nebraska First in NPDES Program
Resignations and Retirements from OWRT
Future Water Crisis Noted
Horton Outlines Federal Water Policy
Research Review: Seasonsal Water Use of Irrigated Pasture Grasses Under Permanent-Set Irrigation as Related to Climatic Factors

Hydroelectric Power Potential At Corps Of Engineers Projects : A Report, Ralph L. Trisko, United States. Army., Institiute For Water Resources

Dickey-Lincoln School Lakes Project

This report completes phase one of the study. It is intended to fill the need, recognized at the outset, for a broad framework within which subsequent more detailed study at the project level might take place. It is an overview of physical hydropower potential in the context of energy and water resources and demands, energy economics, and federal policy, organization, and practices pertaining to hydropower development and marketing.

Selected Aspects Of The Limnology Of Zooplankton In Beaver And Degray Reservoirs, Arkansas, With Emphasis On The Development Of A Method For The Estimation Of Zooplankton Biomass, Eugene H. Schmitz, John T. Mccraw, Pamela J. Williams

Technical Reports

No abstract provided.

Environmental Evaluation Report Onn Various Completed Channel Improvement Projects In Eastern Arkansas, Edward E. Dale Jr., Thomas M. Buchanan, Richard L. Meyer, Robert T. Huffman

Technical Reports

The objective of this report is to evaluate the beneficial and adverse effects that certain channel improvement projects have had on the natural or man-made environments of selected areas in eastern Arkansas. This evaluation will be used as a baseline for determining the immediate and long-term effects that a project may have on the existing environment of the Village Creek Basin.

Food And Distribution Of Underyearling Brook And Rainbow Trout In Castle Lake, California, Wayne A. Wurtsbaugh, R. Brocksen, C. Goldman

Watershed Sciences Faculty Publications

A difference was found in the summer distribution of underyearling brook trout, Salvelinus fontinalis (Mitchill), and planted rainbow trout, Salmo gairdneri Richardson, in Castle Lake, California. Brook trout underyearlings oriented to the bottom and were found primarily in shallow water on the eastern shore of the lake near springs. The rainbow trout underyearlings were more pelagic and were found in the littoral areas along the entire shoreline. Gravimetrically, the food eaten during the summer by brook trout underyearlings was 13% terrestrial, 11% limnetic, and 76% benthic. Rainbow trout ate 15% terrestrial, 15% limnetic, and 70% benthic food. In summer, rainbow …

A Technique For Predicting The Aquatic Ecosystem Response To Weather Modification, Eugene K. Israelsen, David R. Bernard, Thomas M. Twedt, Henry M. Runke

Reports

In the past, considerable effort has been spent on the development of techniques for increasing precipitation from a given cloud formation. However, little attention has been given to identifying and evaluating the impacts of cloud seeing activities on the aquatic ecosystems within the affected areas. The objective of this study was to apply the simulation technique to predict the impacts of cloud seeing on the aquatic ecosystem within the area subject to weather modification. A small mountain watershed near Logan, Utah, was selected for the study. Measurements were made of the significant parameter levels under current conditions. A hydrologic and …

Regional Development: An Econometric Study Of The Role Of Water Development In Effectuating Population And Income Changes, Herbert H. Fullerton, Chris W. Lewis, Jay C. Andersen, John E. Keith, Reed Willis

Reports

Twelve measures of regional economic growth, including populations and three measures of income were compared for areas with and without water investment in 246 counties and 42 water resources subareas in the states of Utah, Colorado, New Mexico, Montana, Wyoming, Idaho, and Nevada. Simple mean omparisons for these measures compiled for the decades of 1940-1950, 1950-1960, and 1960-1970 failed to support the hypothesis that economic growth of those counties and subareas receiving water investment was significantly highter than in those areas which did not, with the possible exception of the 1940-1950 decade. This result is obciously tempered by the fact …

Process Studies And Modeling Of Self-Cleaning Capacity Of Mountain Creeks For Recreation Planning And Management, Cheng-Lung Chen, Keith D. Davis

Reports

Reaeration process studies were conducted on a mountain creek and a large laboratory flume. The method of evaluating the dispersion coefficient, mean velocity, and reaeration coefficient for both creek and flume consisted of finding these values for a deoxygenated portion of the flow containing a conservative tracer (dye). The deoxygenated slug is measured as it moved downstream and the three values are best fit in the analytical solution of the longitudinal dispersion equation which dynamically describes the flow of the dispersing slug in the stream. The best fit was accomplished by using the method of least squares of the differences …

Urban Storm Runoff Inlet Hydrograph Study Volume 1: Computer Analysis Of Runoff From Urban Highway Watersheds Under Time- And Space-Varying Rainstorms, Chen-Lung Chen

Reports

The main objective of this study is to develop an accurate design method for computing inlet hydrographs of surface runoff, with average recurrence intervals of 10, 25, and 50 years, from typical urban highway by flood routing technique. The most comprehensive mathematical model based on the method of characteristics was developed for computing the runoff inlet hydrograph. All flood routing methods were extensively reviewed and the most efficient and accurate technique was adopted for the formulation of a numerical (computer) model including all the rainfall-runoff processes on a highway watershed. Accuracy of the computer model was then examined by comparing …

Urban Storm Runoff Inlet Hydrograph Study Volume 4; Synthetic Storms For Design Of Urban Highway Drainage Facilities., Cheng-Lung Chen

Reports

The main objective of this study is to develop an accurate design method for computing inlet hydrographs of surface runoff, with average recurrence intervals of 10, 25, and 50 years, from typical urban highway by flood routing technique. Knowledge of the time distribution of rainfall in heavy storms constitutes a basis for the design of an urban storm sewer system. A unified time-coordinate system and the rainfall intensity-duration-frequency relationships are used to develop the generalized synthetic (design) hyetograph equations for all types of storms. The hyetograph equations are further normalized for identifying the dimensionless parameters that play predominant roles in …

Urban Storm Runoff Inlet Hydrograph Study, Volume 5, Soil-Cover-Moisture Complex: Analysis Of Parametric Infiltration Models For Highway Sideslopes, Cheng-Lung Chen

Reports

The main objective of this study is to develop an accurate design method for computing inlet hydrographs of surface runoff, with average recurrence intervals of 10, 25, and 50 years, from typical urban highway by flood routing technique. The boundary-value problem of one-dimensional infiltration resulting from rainfall is formulated and solved numerically on a digital computer. The numerical solutions of this idealized mathematical model is used as a basic testing tool in the subsequent analysis of various parametric infiltration models including the Green-Ampt, Kostiakov, Philip, Horton, and Holtan equations. The time of ponding is shown to be the most important …

Naturally Occurring Organic Compounds And Algal Growth In A Eutrophic Lake, V. Dean Adams, Russell R. Renk, Peter A. Cowan, Donald B. Porcella

Reports

No abstract provided.

Watershed Management On Range And Forest Lands Proceedings Of The Fifth Workshop Of The United States/Australia Rangelands Panel, R. J. Mcconnen, B. S. Sadler, Colin L. Pierrehumbert, Kenneth G. Renard, Donald L. Brakensiek, Alden R. Hibbert, T. Talsma, C. W. Rose, Ronald E. Sosebee, Richard Meeuwig, Paul Packer, Walter C. Boughton, J. Paul Riley, Richard H. Hawkins

Reports

Preface: The U.S.-Australia Cooperative Rangeland Science Program In October 1968 the governments of the United States and Australia entered into an agreement for the purpose of facilitating close cooperative activities between the scientific communities of the two countries. The joint communique issued at that time designated the U.S. National Science Foundation and the Australian Commonwealth Department of Education and Science as the coordinating agencies. Both countries were to encourage binational teamwork in research, interchanges of scientists, joint seminars, and exchanges of information. A United States-Australia Rangeland Panel was established in December 1969 to further cooperation between the two countries in …

An Application Of The Utah State University Watershed Simulation Model To The Entiat Experimental Watershed, Washington State, David S. Bowles, J. Paul Riley, George B. Shih

Reports

To study the effects of a forest fire on runoff characteristics, the Utah State University Watershed Simulation Model (USUWSM) has been applied to three small drainage areas in the Entiat Experimental Watershed which is located within the Wenatchee National Forest of central Washington. Each component of the USUWSM has been described in the report, including structural changes to the model that were necessary to achieve reasonable agreement between observed and simulated runoff hydrographs. Lack of information on the spatial distribution and precipitation due to the absence of an adequate precipitation gaging network on or close to the study area was …

Colorado River Regional Assessment Study Part Three: Area-Specific Water Quality Analysis And Environmental Assessment, Utah Water Research Laboratory

Reports

The Colorado River Bain contains the most diverse environment setting of any American river. High mountainous elevations (>14,000 feet) are ultimately succeeded by sea level plains and low valleys. Geological structures and formations include deep, intricately carved river canyons, high mountain slopes, large saline shale structures, and long verdant irrigated river valleys. Fir forests are succeeded by arid rangelands. The river produces the lowest outflow per unit area (60 acre feet per square mile) of any river basin in the United States. It contains the largest number of unique and endangered species in the United States. Finally, it is …

Colorado River Regional Assessment Study Part One: Executive Summary, Basin Profile, And Report Digest, Utah Water Research Laboratory

Reports

No abstract provided.

Economic Value Of Water-Oriented Recreation Quality, E. Boyd Wennergren, Herbert H. Fullerton, John E. Keith, Robin Meale

Reports

No abstract provided.

A Field Technique Measuring Virus Decay And Potential Aerosol Hazard From Wastewater Sprinkler Irrigation, Michael F. Torpy, Robert A. Gearheart, J. Clifton Spendlove, Rex S. Spendlove

Reports

The increased use of domestic wastewater for irrigation purposes has stimulated a growing practice of sprinkler irrigating from oxidation ponds and other domestic wastewaters. Aerosols generated from these sprinkler irrigation systems may contain potentially hazardous pathogens. Subsequently, the aerosols can contain infective viruses which can be carried through the air to surrounding populations. Thus, a public health hazard can be created by sprinkler irrigating domestic wastewater. This study is an investigation of a means by which the virus decay rate of viruses in aerosols and the potentials hazard of sprinkler irrigation aerosol clouds may be examined. A means of injection …

Development Of A Dynamic Programming Model For The Regionalization And Staging Of Wastewater Treatment Plants, Stanley L. Klemetson, William J. Grenney

Reports

No abstract provided.

Colorado River Regional Assessment Study Part Four: Bibliography And Appendices, Utah Water Research Laboratory

Reports

No abstract provided.

Optimization Of Water Allocation, Wastewater Treatment, And Reuse Considering Nonlinear Costs, Seasonal Variations, And Stochastic Supplies, A. Bruce Bishop, Rangesan Narayanan, Suravuth Pratishthananda, Stanley L. Klemetson, William J. Grenney

Reports

Two significant, interrelated water resources problems are: (1) efficiently salvaging and reusing effluent water in order to augment limited water supplies; and (2) economically managing and treating wastewater to meet water quality standards. Using systems engineering and operations research techniques, the report focuses on the optimal management and use of water of impaired quality in a water resources system, including utilization or irrigation return flows and other poor quality water, water quantity and quality management systems, and wastewater reclamation opportunities. The study develops a mathematical programming transportation or transshipment model formulated for the Lower Jordan River Basin in Utah. The …