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251 - 275 of 881 Items << < 6 7 8 9 10 11 12 13 14 15 > >>
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Topographic map of China Garden - part of Pauba Ranch showing proposed irrigation system - Area (North of road - 307 ft, South of road - 55 ft), turn out at well no. 30 - Pauba irrigation system - Vail Company - Corrected on May 9, 1920 (plan,...
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Cover title; At head of title: Department of the Interior, General Land Office
2008-01-23 2005-08-08 |
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1 map: col.; Relief shown by contours and spot height. Depths shown by contours and soundings; Shows Crater Lake and the Mount Mazama region; Base map: U.S. Geological Survey 1:62,500 special series Crater Lake National Park and vicinity, Oregon,...
2008-06-30 2009-06-16 |
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Historically the Columbia River was amongst the most productive salmonidbearing watersheds in North America. Currently, salmonid populations have collapsed and are estimated at ten percent of historic levels. Because of this, there are thirteen,...
2014-05-01
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Numerous field and analytical methods exist to assist in the quantification of the quantity and quality of in-stream habitat for salmonids. These methods range from field sketches or ‘tape and stick’ ground-based surveys, through to spatially...
2010-12-01
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Fine-scale (submeter) resolution digital elevation models (DEMs) created from high precision (subcentimeter) instruments (e.g., total station, rtkGPS, and laser scanning) have become ubiquitous in the field of fluvial geomorphology. They permit a...
2014-02-01
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In the productive central-Oregon coastal upwelling environment, wind-driven upwelling, tides, and topographic effects vary across the shelf, setting the stage for varied biogeochemical responses to physical drivers. Current, temperature, salinity,...
2013-10-02 (iso8601)
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The predictability of coastal ocean circulation over the central Oregon shelf, a region of strong wind-driven
currents and variable topography, is studied using ensembles of 50-day primitive equation ocean model
simulations with realistic...
2009-08 (iso8601)
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Antarctic Ice Sheet mass balance and, hence, sea level change is affected by the floating extensions of outlet glaciers and ice streams that take up about 44% of the coastline (Drewry et al., 1982) and are referred to as "ice shelves". Ice sheet...
2014-05-16 (iso8601)
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The relative influences of stand structure and topographic
variation on volume growth, photosynthetic surface area,
and stem growth efficiency were determined for six 17 to
23 year old well stocked stands in the central Oregon
Coast Range. Plots...
1986-05-30 (iso8601)
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This study examined the relationships between the frequency of occurrence and severity of Douglas-fir dwarf mistletoe (Arceuthobium douglasii Engelmann), environmental and stand conditions, and plant communities in the Southern Oregon Cascade...
1995-06-08 (iso8601)
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58 x 46 cm., on sheet 85 x 83 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." "Geology mapped in 1961. Contours on...
1967-05-15
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'May 1, 1940.' 'F-225.' Relief shown by contours.
1940-05-01
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published accounts of these trips consist mainly of personal experiences, much geographical knowledge was accumulated, for he persisted in going beyond well known routes into new areas, and notes were made on archeological sites. On the 1921...
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Other examples would include the influence of land-use practices and of vegetation modification on the hydrologic regimen; the drought tolerance of various species of phreatophytes; the relation between depth of water table and consumptive use by...
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TABLE OF CONTENTS PART I INTRODUCTION 18 - 11 History and ethnology 18 Irrigated area table 19 Cultural geography 19 General physiographic features 262e . .3 Physiographic areas and farming 1d CLIMATE 182 - 18 Climatic table, Sprague River,...
2024-05-15
2005-05-06 2004-10-20 |
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Title from cover; "May 1991"
1991-05-15
2004-10-21 2004-06-16 |
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The lecturer at the Government's West Vista House displays a topographic model of the foundation upon which the dam rests.
2024-05-15
2024-05-15 |
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Monitoring geomorphic changes in response to river restoration interventions through the use of repeat topographic surveying is becoming more common in long-term monitoring programs. Repeat montitoring surveys are often preformed before and...
2009-04-01
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Numerous field and analytical methods exist to assist in the quantification of the quantity and quality of in-stream habitat for salmonids. These methods range from field sketches or 'tape and stick' ground-based surveys, through to spatially...
2011-03-01
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Digital elevation models (DEMs) derived from ground-based topographic surveys have become ubiquitous in the field of fluvial geomorphology. Their wide application in spatially explicit analysis includes hydraulic modeling, habitat modeling, and...
2014-06-01
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