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476 - 500 of 881 Items << < 15 16 17 18 19 20 21 22 23 24 > >>
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The development of personal computer software
coupled to an analytical stereoplotter allows major gains
in efficiency and accuracy in a number of forestry related
subjects. This thesis describes the operation of a system
developed by Carto...
1991-08-26 (iso8601)
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Patterns of western hemlock regeneration were studied in relation to forest structural development and environment in the Oregon Coast Range. Density of western
hemlock seedlings was examined across the climatic gradient from cool, moist coastal...
1998-02-13 (iso8601)
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Several state and federal agencies have identified Oregon's coastal wetlands as
priority areas for conservation, and in some cases have specifically singled out
nontidal (mostly palustrine) wetlands as a major concern. Recent research has...
2005-07-22 (iso8601)
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Six headwalls in the central Oregon coast range were selected for study of soil engineering properties and vegetative
characteristics important for analysis of slope stability. The headwalls were considered representative of those which would be...
1990-11-29 (iso8601)
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Nehalem Bay is located on the northern coast of Oregon in Tillamook County and contains approximately 243 ha of salt marsh. The Nehalem marshes occur as islands and land-tied units. West Island is the largest marsh island with an area of 82.9 ha...
1974-11-16 (iso8601)
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From the 1920's through 1951 several severe fires occurred in the predominantly conifer forest ecosystems of the northern Oregon Coast Range. Of the 211,151 ha. of mapped area, 57 percent was burned. The effects of frequent fires with high...
1997-07-11 (iso8601)
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Methodology for the utilization of LANDSAT-1 imagery and aerial photography on the environmental evaluation of water resources development is presented. Environmental impact statements for water resource projects were collected and reviewed for...
2011-07-01
2011-07-01 1976-09-01 |
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Map of catchment areas & valleys of Rio Grande Del Norte, of "Upper Rio Grande," the 160 miles Section in Colorado, and of "Middle Rio Grande," the 250 miles Section in New Mexico, above the U.S.R.S. "Elephant Butte" Project in Lower Valleys....
2024-10-31
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58 x 46, on sheet 88 x 84 cm., fold. in envelope 30 x 24 cm. Relief shown by contours and spot heights. "Contour interval 20 feet." "Prepared in cooperation with the U.S. Atomic Energy Commission." Title on envelope: Geologic map of the Oak Spring...
1963-10-31
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38 x 48 cm. Relief shown by hachures and spot heights. "Atlas sheet no. 53(C)." "Issued May 7th 1877." "1st. Lieut. Geo. M. Wheeler, Corps of Engineers, U.S. Army." Prime meridians: Greenwich and Washington, D.C. Includes sectional diagram that...
1877-05-07
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'Prepared by the U.S. Department of the Interior, Geological Survey, in cooperation with the U.S. Department of Housing and Urban Development, Federal Insurance Administration. 1973.' Sheet 1: Las Vegas NE, Nev.; Sheet 2: Las Vegas SE, Nev.;...
1973-10-31
1973-10-31 |
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'Chief Engineers Office, Los Angeles, Calif. August 4, 1931. Scale: 1"=100'. Drawn by L.P.D. 1"=10'.' Accompanies: Letter from R. L. Adamson to F. H. Knickerbocker, August 18, 1931 (Folder 6B: 18-1-9).
1931-08-04
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Map of groundwater resources in southern Nevada.
2024-10-31
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Environmental Considerations. Finally, environmental impacts have a substantial bearing on the evaluation of any potential site. Factors such as recreation, fish and wildlife, and other public uses will have a decided effect on the acceptability...
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The acreages under existing developments served from the main stem of the Columbia are shown, by counties, in the following tabulation:
Land irrigable under existing works—Main stem of
Columbia River
Acres
Location
Total
Irrigated...
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imity to the ocean in Columbia Harbor the level of the River is not affected by freshets from upstream, and the only variation that has to be recognized is the bi-diurnal rise and fall of the tides.
NOTE : The business section of Astoria, which I...
2004-07-22
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Document: Appendices to Pacific Southwest Water Plan Review Draft "U.S. Geological Survey Appendix", August 1963, page 1
1963-08-01
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Report:United States Department of Interior, Stewart L. Udall, Secretary, Bureau of Reclamation, Floyd E. Dominy, "Pacific Southwest Water Plan", Report of August 1963 as modified January 1964, Table of Contents, page iv
1964-01-01
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Journal: Anthropological Notes, University of Utah Department of Anthropology, "Historical Sites in Glen Canyon, Mouth of San Juan River to Lee's Ferry", Number 46, June 1960, page 17
1960-06-01
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Report: "Reconnaissance Engineering and Geological Report on the Bridge Canyon Tunnel", January 17, 1956, page 9
1956-01-17
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Document: Bureau of Reclamation, Central Arizona Project, 1963, author unknown, page 1
1963-10-31
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Cost of this short-range schedule in the Pacific Southwest is estimated as about $3,000,000 to complete maps in progress, plus about $4,000,000 for the maps to be started through 1967.
Long-range Schedule
Following the six-year schedule just...
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CHAPTER IV
ALTERNATIVE PLANS
General
In the process of formulating the plan for the Marble Canyon Project, numerous alternative plans and damsites were studied. Some of these studies were in considerable detail, and some were reconnaissance in...
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7. Surface-Water Resources Investigations (USGS--Expansion of stream gaging programs)
8. Water Quality and Waste Management (USBR, USGS)
a. Determination of water quality
b. Means of water quality management
9. Water Salvage (USBR, USGS, BIA,...
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A topological map of the Elsinore quadrangle in California, possibly a duplicate.
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