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Drainage and Erosion Control Facilities: Field Performance Investigation

Description: Partial summary: "The drainage and erosion control facilities of 54 installations were observed to evaluate performance of surface and subsurface drainage systems, erosion control measures, and conditions of buried conduits and associated facilities. Although the facilities observed varied from only 1 to 30 years or more of age and it is recognized that basic demands have increased as well as the fact that design and construction procedures have been improved continuously, many of the old familiar problems still exist and a few new ones have developed" (p. xi).
Date: June 1973
Creator: Grace, John L.; Calhoun, C. C. & Brown, D. N.
Partner: UNT Libraries Government Documents Department

Ground-Water Hydrology Before, During, and After Coal Strip Mining of a Shall Watershed in Coshocton County, Ohio

Description: From introduction: In this comprehensive cooperative study, the U.S. Department of Agriculture, Agriculture Research Service (USDA-ARS) at Coshocton, Ohio, is responsible for collecting and analyzing streamflow, sediment, and erosion data.
Date: 1983
Creator: Razem, Allan C.
Partner: UNT Libraries Government Documents Department

Investigation of ceramic, graphite, and chrome-plated graphite nozzles on rocket engine

Description: The use of ceramic material for rocket nozzles and the effectiveness of preventing oxidation and erosion of graphite nozzles by chrome-plating the internal surface were investigated. A supported ceramic nozzle, cracked by initial operation, was operated a second time without further cracking or damage. Chrome-plating the internal surface of graphite nozzles effectively prevented oxidation and erosion that occurred during operation with unprotected graphite.
Date: March 7, 1949
Creator: Kinney, George R. & Lidman, William G.
Partner: UNT Libraries Government Documents Department

Terracing Farm Lands

Description: This bulletin discusses the use of terracing on farm lands as a solution to the problem of soil erosion. Two methods of terracing are described: the bench terrace and the ridge terrace. Instructions for creating terrace outlets and for laying and building terraces are also given.
Date: 1918
Creator: Ramser, C. E. (Charles Ernest), b. 1885
Partner: UNT Libraries Government Documents Department

Sediment Transport and Source Areas of Sediment and Runoff, Big Sandy River Basin, Wyoming

Description: Abstract: A study was conducted for the resolution of sediment source areas in the Big Sandy River basin, southwestern Wyoming. Suspended-sediment and bedload data were collected in order to determine total sediment transport at several locations within the basin. The bedload data were compared to the Einstein bedload function and total load data were compared to the Colby method. The bedload comparison showed a higher estimation of transport rates with Helley-Smith sampler measurements than with the Einstein beadload function. The Colby method yielded higher transport rates at high flows and lower transport rates at low flows than the measured total transport rate. The Big Sandy reservoir acts as a control in the basin. The area upstream of the reservoir was interpreted separately from the area downstream for source-area determination. In the arid plains upstream of the reservoir, the amount of sediment transported increased 98 percent with an increase in runoff of only 1 percent.
Date: May 1982
Creator: Kircher, James E.
Partner: UNT Libraries Government Documents Department

Shoreline Movements, Report 1: Cape Henry, Virginia, to Cape Hatteras, North Carolina, 1849-1980

Description: From addendum: . Part 3 of Technical Report CERC-83-1 describes the general cartographic process used to produce the shoreline position digital data base and maps from which the attached set of 18 composite shoreline position map reproductions were made. The report also describes quality control methods, potential error sources, and probable ranges of error for this process.
Date: July 1983
Creator: Everts, Craig H.; Battley, Jeter P. & Gibson, Peter N.
Partner: UNT Libraries Government Documents Department

The effect of liquid and ice particles on the erosion of a supercharger-inlet cover and diffuser vanes

Description: Report discussing the results of accelerated erosion tests to determine the separate effects of the passage of fuel, water, and ice particles through a supercharger. Recommendations for preventing erosion are provided, including materials choice and joint design.
Date: June 1946
Creator: Rollin, Vern G.
Partner: UNT Libraries Government Documents Department

Terracing Farm Lands.

Description: Discusses terracing as a way to prevent soil erosion. Provides instructions for building and maintaining terraces.
Date: 1924
Creator: Ramser, C. E. (Charles Ernest), b. 1885
Partner: UNT Libraries Government Documents Department

Savannah River Site 1991 Road Erosion Inventory.

Description: Final Report. USDA Forest Service, Savannah River, Aiken, SC. 28 pp. Abstract - This paper explains the rationale and results of a 1991 road erosion inventory conducted by members of the USDA Forest Service – Savannah River (FS-SR) and USDA Natural Resources Conservation Service (NRCS). The inventory provided information for the Department of Energy - Savannah River (DOE-SR) to justify the need for developing an erosion and sediment control program with appropriate funding, personnel, and equipment. Federally managed since the early 1950’s, the SRS is located on 198,344 acres (80,301 hectares) in the South Carolina counties of Aiken, Barnwell, and Allendale. Located along the eastern border of the Savannah River, the SRS is located within the Upper and Lower Coastal Plains of South Carolina.
Date: June 22, 2007
Creator: Jones, Cliff.
Partner: UNT Libraries Government Documents Department

Engineering Geology and Geomorphology of Streambank Erosion, Report 3: The Application of Waterborne Geophysical Techniques in Fluvial Environments

Description: Partial abstract: "The development of waterborne geophysical systems and techniques has provided the geotechnical community with an array of data acquisition tools that can be applied to the fluvial environment. The major purpose of the study described in this report is to evaluate the performance, application, and capability of selected waterborne acoustic profiling systems for streambank erosion studies in fluvial environments. Additional objectives of the study reported herin were to present types of available survey ssytems and related support equipment and to describe techniques for using the systems and equipment."
Date: February 1982
Creator: May, John R.
Partner: UNT Libraries Government Documents Department

Scour at Selected Bridge Sites in Alaska

Description: From introduction: The purpose of this report is to describe the results of the data collection at these bridge sites and compare the results with existing laboratory and field data and with those results predicted from selected scour formulas.
Date: November 1975
Creator: Norman, Vernon W.
Partner: UNT Libraries Government Documents Department

Storm Runoff as Related to Urbanization Based on Data Collected in Salem and Portland, and Generalized for the Willamette Valley, Oregon

Description: Abstract: Storm runoff as related to urbanization is defined by a series of regression equations for Salem and for the Willamette Valley, Oregon. In addition to data from 17 basins monitored in the Salem area, data from 24 basins gaged in a previous study in Portland, Oregon-Vancouver, Washington were used defining the Willamette Valley equations. Basins used to define equations ranged in size from 0.2 to 26 square mi. Rainfall intensity varied from 1.8 to 2.2 in. for the 6-hour, 0.020 exceedance probability. Sensitivity analyses of equations indicate that urbanization of an undeveloped basin can increase peak discharge more than three times and almost double runoff volume. Much of Portland and Vancouver are located on porous river terraces where dry wells are used to shunt runoff. Much of east Salem is located on previously farmed land where drain tiles used to dewater soils still connect directly to streams.
Date: 1983
Creator: Laenen, Antonius
Partner: UNT Libraries Government Documents Department

Reconnaissance of Surface-Water Resources in the Kobuk River Basin, Alaska, 1979-80

Description: From introduction: This report contains data on physiographic and climatic characteristics of the Kobuk River basin, as well as stream channel hydraulic properties, seasonal quantity and quality of surface waters, floods, channel erosion, and benthic invertebrates. The data show the magnitude and ranges of stream discharge, width, depth, and velocity, of flow that can be expected in late winter and summer periods, and indicate flood and erosion hazards in the basin.
Date: 1983
Creator: Childers, Joseph M. & Kernodle, Donald R.
Partner: UNT Libraries Government Documents Department

Streamflows and Channels of the Green River Basin, Wyoming

Description: From introduction: One purpose of this study was to describe streamflows of the Green River and its tributaries. In addition to describing the cause and occurrence of streamflows in the study area, a brief discussion of how streamflow data are collected and summarized is presented as background information to users of this report who may be unfamiliar with streamflow measurement. The second and primary purpose of this study was to describe hydraulic characteristics of streams in the study area.
Date: May 1982
Creator: Lowham, H. W.
Partner: UNT Libraries Government Documents Department

Development of a Quantitative Method to Predict Critical Shear Stress and Rate of Erosion of Natural Undisturbed Cohesive Soils

Description: The report describes the results of erosion and soil characterization tests performed on cohesive soils. Appendices to the report include plots of shear stress versus erosion rate for remolded and undisturbed soils.
Date: July 1980
Creator: Arulanandan, Kandiah
Partner: UNT Libraries Government Documents Department

Impacts of Technology on U.S. Cropland and Rangeland Productivity

Description: A report by the Office of Technology Assessment that "describes the major processes degrading land productivity, assesses whether productivity is sustaining using current agricultural technologies, reviews a range of new technologies with potentials to maintain productivity and profitability simultaneously, and presents a series of options for congressional consideration" (p. iii).
Date: August 1982
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department

Assessing regional gully erosion risk: a remote sensing and geographic information systems approach

Description: Gully erosion has been established as a major source of sediment pollution in the upper Trinity River watershed in north-central Texas. This fact, along with a lack of models appropriate for a large-area gully erosion analysis established a need for a gully erosion study in the upper Trinity basin. This thesis project attempted to address this need by deriving an index indicative of gully erosion risk using remote sensing and geographic information systems (GIS) methodology.
Date: August 1995
Creator: Sill, Paul E. (Paul Eric)
Partner: UNT Libraries

Connection to Nature

Description: Lesson plan containing a collection of activities and resources regarding connections to nature that meet state education standards and national sustainability standards for the 2nd grade level.
Date: June 26, 2014
Creator: Ibarra, Vanessa
Partner: UNT Office of Sustainability