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Playa Surface Morphology: Miscellaneous Investigations

Description: Abstract: Numerous environmental processes affect the development and stability of playa (lakebed) surfaces. Of special significance are hydrologic processes that control the amount and flow of both surface and ground water, and climatic variations which in turn influence the hydrology. This report, in six parts, examines some aspects of the playa surface environment. Chapter 1 is an introduction. Chapter 2 describes microrelief changes that developed at Harper Playa, California, following flooding of the playa in 1965-66. Chapter 3 documents a subsurface hydrologic investigation at Rogers Playa, California. The investigation revealed that the piezometric surface has lowered into sand layers beneath the surface, and it may explain why giant desiccation fissures have formed in the surface clays. Chapter 4 describes an investigation of seven Australian playas and suggests that Australia did not undergo a pluvial period like that of the western United States. Chapter 5 describes three kavirs (playas) in northern Iran and indicates that former lakes did exist there, but not to the same extent as in the western United States. Chapter 6 examines the possibilities of observing playa surface changes from satellites, using the present remote sensor technology. It also states that Gemini color photography and high resolution vidicon (TV) imagery are currently useful.
Date: March 1968
Creator: Neal, James T.
Partner: UNT Libraries Government Documents Department

Considered Lake Erie-Lake Ontario Waterway: Hydraulic Model Investigation

Description: Report describing the results of studies meant to provide "determination of the most functional and economical location for a lock in the vicinity of Buffalo, N. Y., and evaluation of navigation conditions at the entrance to an overland canal joining the American channel of the Niagara River northwest of North Tonawanda, N. Y." (p. ix).
Date: April 1970
Creator: Murphy, Thomas E.
Partner: UNT Libraries Government Documents Department

Water Quality of Alignment, Farquar, and Long Lakes in Apple Valley, Minnesota

Description: Abstract: Alimagnet, Farquar, and Long Lakes, in Apple Valley, Minnesota, were sampled from 1973-79 to determine their physical and chemical characteristics. A storm-sewer inlet to Alimagnet Lake was also sampled during two storms in 1978. The 1976-77 drought caused a more noticeable effect on the quality of the lakes than any other factor. Chloride concentrations were 10 to 15 milligrams per liter before the drought, but increased 2 to 4 times during the drought. Dissolved solids reacted similarly . Dissolved oxygen and pH were governed mainly by biological activity. In February 1977, dissolved-oxygen concentration was less than 0.5 milligrams per liter in the three lakes. Ratios between mean total nitrogen and mean total phosphorus ranged from 22:1 to 26:1. Tropic-state indices indicate that the lakes are eutrophic. Blue-green algae dominated the phytoplankton populations. Storms sampled at a storm-sewer inlet to Alimagnet Lake showed higher concentrations pf chromium, copper, nickel, and zinc than of lead, arsenic, cadmium, and mercury. Total phosphorus for the September 1978 storm had a concentration of 1.7 milligrams per liter, which means that approximately 29 pounds entered the lake during the 5.5-hour sampling period.
Date: June 1981
Creator: Have, Mark R.; Payne, Gregory A. & Ayers, Mark A.
Partner: UNT Libraries Government Documents Department

Monthly and Annual Water Budgets of Lake Wingra, Madison, Wisconsin, 1972-1977

Description: From abstract: This report presents estimated annual and monthly water budgets for lake Wingra and the adjacent wetland area for January 1972 through September 1977. Annually, inputs from precipitation, surface runoff, and ground-water inflow are approximately equal (31, 34, and 35 percent, respectively). Outputs include outflow from the lake into Murphy Creek (70 percent), evotranspiration from the lake and wetland (26 percent), and ground-water outflow (4 percent).
Date: October 1979
Creator: Novitzki, R. P. & Holmstrom, B. K.
Partner: UNT Libraries Government Documents Department

Limnology of Selected Lakes in Ohio-1975

Description: From abstract: Water-quality reconnaissance by the U.S. Geological Survey and Ohio Environmental Protection Agency, to evaluate the status of Ohio's lakes and reservoirs was begun in 1975 with studies of 17 lakes. Spring and summer data collections for each lake included: profile measurements of temperature, dissolved oxygen, pH, and specific conductance; field and laboratory analyses of physical, biological, chemical (nutrient), and organic characteristics; concentrations of major and minor chemical constituents from composites of the water column; and physical and chemical data from major inflows.
Date: September 1977
Creator: Tobin, Robert L. & Youger, John D.
Partner: UNT Libraries Government Documents Department

Great Lakes Water Level Monitoring Stations

Description: Information sheet describing the importance of monitoring the water level fluctuation cycles of the Great Lakes, which may help to understand climate, weather, oceans, and coasts.
Date: unknown
Creator: United States. National Oceanic and Atmospheric Administration.
Partner: UNT Libraries Government Documents Department

General Hydrology and External Sources of Nutrients Affecting Pine Lake, King County, Washington

Description: Objectives: This report presents the findings of a study that was designed to determine (1) the general hydrologic conditions in the immediate vicinity of the lake, and (2) the loadings of inorganic nitrogen and phosphorus from selected external sources that affect the lake.
Date: 1983
Creator: Dion, N. P.; Sumioka, S. S. & Winter, T. C.
Partner: UNT Libraries Government Documents Department


Description: Photograph of a tower in Ireland. In the foreground, water is visible surrounded by a stone wall. Beyond the stone wall, a stone tower is viisble. Trees and sky are visible in the background.
Date: 1970
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[West Lake]

Description: Photograph of the West Lake in Hangzhou, China. A boat with canopy top is visible in the foreground. The opposite shore is visible in the background.
Date: unknown
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

Digital Models of a Glacial Outwash Aquifer in the Pearl-Sallie Lakes Area, West-Central Minnesota

Description: From purpose and scope: The purpose of this investigation is to 1) study the hydrologic system in a glaciated terrain typified by numerous lakes, with particular focus on the effects of lake-ground-water interchange, 2) simulate the natural system by using two digital modeling methods--areal (map view) and vertical section, and 3) evaluate the utility of the models and determine the kinds and amount of basic data needed to obtain reasonable simulations.
Date: November 1975
Creator: Larson, Steven P.; McBride, Mark S. & Wolf, Ronald J.
Partner: UNT Libraries Government Documents Department


Description: Photograph of a cemetery in Ireland. In the foreground, graves are scattered amongst surrounding greenery. A lake and hills are visible in the background.
Date: 1970
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Ritsurin Park]

Description: Photograph of Ritsurin Park in Takamatsu, Japan. In the foreground, a woman stands holding a parasol on a walkway lined with a bamboo fence. The walkway is flanked by two trees. The woman overlooks a lake.
Date: 1978
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

The Synecology of Phyco-Periphyton in Oligotrophic Lakes

Description: This study is designed to (a) demonstrate the highly productive nature of the littoral area as compared to the pelagic region, (b) the possible importance of phyco-periphyton in the diets of fish, (c) the effects of meteorological conditions on distribution of phytoplankton, and (d) a demonstration of the invalidity of using artificial substrates as a universal means of measuring productivity.
Date: May 1964
Creator: Foerster, John W.
Partner: UNT Libraries

[Man on the Shore]

Description: Photograph of a man standing on the shore of a lake. In this image, the unidentified man is standing in front of the sun, casting him in shadow.
Date: 19uu
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

Ecosystem Restoration in the Great Lakes: The Great Lakes Regional Collaboration Strategy

Description: This report summarizes The Great Lakes Regional Collaboration Strategy, analyzes issues related to the Strategy and its implementation, and discusses federal legislation related to restoration in the Great Lakes. The Strategy is a series of recommendations for actions and activities aimed at starting the restoration of the Great Lakes ecosystem. The Strategy encompasses eight issue areas: aquatic invasive species, fish and wildlife habitat (habitat/species), coastal health, contaminated sediments, nonpoint source pollution, toxic pollutants, indicators and information, and sustainable development.
Date: January 30, 2008
Creator: Sheikh, Pervaze A.
Partner: UNT Libraries Government Documents Department

Colonial Birds Nesting on Man-made and Natural Sites in the U.S. Great Lakes

Description: The following report documents the habitat relationships at 24 selected natural and dredged material colonial bird nesting sites and identifies the species and population sizes of all colonial nesting birds of the U.S. Great Lakes of up to 1.6 km inland.
Date: May 1978
Creator: Scharf, William C.; Shugart, Gary W. & Chamberlin, Michael L.
Partner: UNT Libraries Government Documents Department

Radioactivity Transport in Water: the Dispersion of Radionuclides in Open Channel Flow

Description: From introduction: It is the purpose of this study to present field measurements of dispersion in a river and a canal, whose characteristics are unlike streams in which similar work has been done. The Colorado River and the Pierce Canal were selected for testing.
Date: June 1, 1963
Creator: Patterson, Calvin Clyde & Floyna, Earnest F.
Partner: UNT Libraries Government Documents Department