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1901 - 1925 of 4837 Items << < 72 73 74 75 76 77 78 79 80 81 > >>
1901 - 1925 of 4837 Items << < 72 73 74 75 76 77 78 79 80 81 > >>
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We characterized the structure and composition of unmanaged riparian forests in three river basins in Oregon’s coastal mountains. Our objective was to evaluate stand attributes at three spatial scales: streamside (site), drainage network (stream...
1999 (iso8601)
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An alternative to traditional roofing, extensive green roofs are contained ecosystems consisting of a drainage layer, a thin media profile which is planted with hardy plant species. Extensive green roof plants must maintain multiple functions...
2009-07-22T23:22:28Z (iso8601)
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Image is out of focus. Dark line in center of image may be debris hitting the camera.
2016-12-05 2016-12-05 |
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In this article, we demonstrate the application of a continuous confinement metric across entire river networks. Confinement is a useful metric for characterizing and discriminating valley setting. At the reach scale, valley bottom confinement is...
2019-03-25
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Stratigraphic measurement of the 1,238-rn thick Cowlitz Formation in the
southwest Washington type section along Olequa and Stillwater creeks reveals complex
facies succession of wave- to tide-dominated deltaic sequences. The underlying, 625-rn...
1998-03-09 (iso8601)
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Concentrations of phosphorus and nitrogen in surface waters are being regulated in the United States and European Union. Human activity has raised the concentrations of these nutrients, leading to eutrophication of inland waters, which causes...
2012-01-01
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This study focused on extensive soil mass movement occurrence
in the Willamette National Forest of western Oregon and on intensive
measurements of some physical and biological changes in
streams following debris torrents. Debris torrents are a...
1982-06-22 (iso8601)
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A second man stands near trench. Note on envelope reads, "Machinery."
2016-12-05 2016-12-05 |
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The study of the cutthroat trout in the Logan River drainage was initiated in cooperation with the Utah Cooperative Wildlife Research Unit and the Utah Fish and Game Department during May of 1948. The first field work began that month. The taking...
1950-05-01
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Through the trapping of sediment behind dams, the
presence of beaver in a watershed may cause substantial
changes to fluvial and geomorphic processes. In an
effort to investigate sedimentation patterns in beaver
ponds in the Oregon Coast Range, a...
1994-02-21 (iso8601)
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A million acre tract of land within the "Big Bend" of the
Columbia River in south-central Washington became the locale for an
important public area planning experiment and geotechnic enterprise
in the late 1930's and early 1940's. The Columbia...
1973-07-11 (iso8601)
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Best utilizing water resources requires coordinating their availability and use in time and space. Required can be: spatially and temporally distributed data; simulators to predict system response to stimuli; procedures for defining management...
2005-01-01
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Analysis of topographic and river morphometric parameters was conducted using digital elevation models (DEMs) and field observations in order to determine the role of variable rock resistance on topographic relief, to examine how spatially and...
2002-11-19 (iso8601)
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The goal of this project was to gain a better understanding of atrazine occurrence in the United States by surveying drinking water utilities' sources and finished water for atrazine on a weekly basis for seven months. Atrazine is a contaminant of...
2006-01-01
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Note on envelope reads, "Vortex tube, Bel. Lab, general."
2016-08-19 2016-08-19 |
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The Division of Water Resources is conducting a study of further water development in the Virgin River Basin. This report examines the effects of groundwater development as a part of the overall study. The study...
1987-01-01
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Reports from regional meetings of irrigation professionals, including "Meeting of Representatives in Irrigation Research from Experiment Stations of 11 Western States at Logan, Utah, Jan. 20 & 21, 1944, Report of Attendance by W. E. Code," "Report...
2017-07-12 2017-07-12 |
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Statement recommending that the Senate Subcommittee on Energy Research and Water Resources defer action on S. 3394, "a measure to authorize the Secretary of the Interior to carry out cerntain engineering studies and implementation measures...
1976-06-07
2007-01-02 2007-01-02 |
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A generally applicable hybrid computer program is developed to simulate runoff from urban watersheds, and is applied to represent the outflow hydrographs of three urban watersheds located within Salt Lake County,...
1976-01-01
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