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226 - 250 of 417 Items << < 5 6 7 8 9 10 11 12 13 14 > >>
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The Willamette Silt is a surficial geologic unit composed of successive Missoula Flood Deposits that underlies 3100 km2 (1200 mil) of arable land in the Willamette Valley of Oregon. The Willamette Silt protects the underlying regionally important...
2002-04-26 (iso8601)
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The development and allocation of the water resourcse within a state require water planners to prepare plans far in advance of the actual time new facilities are required. It is not easy to identify and evaluate all the possible alternatives for...
1972-01-01
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The Walla Walla basin lies in an arid region on the border of Eastern Washington and Oregon. A large portion of the area is devoted to agricultural production, relying on irrigation water diverted from the Walla Walla River and underlying...
2011-05-24 (iso8601)
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With the goal of identifying deficiencies in water allocation and to demonstrate how the existing water supply might be integrated into the overall water supply system, a regional optimization model is developed for the Gaza Strip that includes...
2014-01-01
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Making best use of water resources requires coordinating use of groundwater and surface waters--conjunctive use. Conjunctive water management is important on the regional (watershed or aquifer), water district and field scales. Goals might differ...
1998-06-01
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Planners must sometimes decide how to restrict or reduce groundwater use to prevent unacceptable future problems. Often there are several alternatives (policies). Comparing policies can involve formulating a sustained groundwater yield...
2004-01-01
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Introduction: The objective of this research to develop a spatially distributed water balance model based on the integration of spatially distributed data. Progress this year has consisted of model development,...
1992-01-01
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Letter: To Floyd E. Dominy, from John J. Rhodes, June 5, 1967(thermofax), page 1
1967-06-05
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Enzymes play an important role in the environment, they breakdown natural-occurring
and anthropogenic molecules so that they can be transported into cells and
utilized. Enzyme assays are routinely used in soil science and oceanography to measure...
2005-05-26 (iso8601)
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The shallow aquifer in Northeast Malheur County, Oregon is polluted with
Nitrates at concentrations exceeding federal drinking water standards. Efforts to solve the
groundwater problems in this area have focused on developing farm management...
1996-04-30 (iso8601)
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Climate change will continue to profoundly affect water supply and aquatic ecosystems in the Pacific Northwest. Changes such as warmer air temperatures, increases in the proportion of winter rain versus snow, reduced spring snowpack, and earlier...
2011-05-24 (iso8601)
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Dams built by North American Beaver create natural water storage and slow water as it moves through streams. In portions of streams with beaver dams, these effects have been observed to decrease the peak magnitude of floods and increase base flow...
2017-05-01
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Generally, the embedding technique for optimizing groundwater management has been limited to small scale or steady-state groundwater flow management cases. The embedding approach causes sparse, highly structured constraint matrices which have been...
1992-01-01
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This paper demonstrates the use of models for development of optimal groundwater extraction strategies for an area in which the availability of water from other sources is anticipated by the end of the planning period. The study area: (1) has more...
1988-01-01
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The presented method enhances groundwater-mandated safe yield management. It is useful for settings that prevent sustained yield or integrated management. To protect hydraulically connected surface water rights, the Utah government’s Cache Valley...
2010-01-01
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A precipitation-runoff model for the Methow River Basin was used to simulate six alternatives: (1) baseline of current flow, (2) line irrigation canals to limit seepage losses, (3) increase surface-water diversions through unlined canals for...
2024-04-25
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In an effort to better understand the dominant flow processes in semiarid systems, an experiment was conducted in a high instrumented 26 ha catchment in Idaho, USA. Snowmelt from deep snow drifts constitutes the main input into the basin....
1995-01-01
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The Agricultural Experiment Station
Records document agricultural research in Oregon from the founding of the
Experiment Station in 1880s. Research activities were conducted on the Oregon
State University campus and at branch stations...
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Accelerated tropical glacial melt on the order of 15-18 meters per year since the
1980’s in Peru’s Cordillera Blanca region is alarming rural communities and urban
authorities, causing them to seek technical support for risk management and...
2011-04-14
2011-04-14 2010-12-01 2011-04-14 |
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Ground water and surface water are often interconnected, consequently, changes in use of one resource impacts the other. As the demand on water resources continues to increase, conflict between surface water and ground water users will continue to...
1996-02-01
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"Serial no. 108-104."
2024-04-25
2005-04-25 2005-04-15 |
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Process-based hydrological models have a long history dating back to the 1960s. Criticized by some as over-parameterized, overly complex, and difficult to use, a more nuanced view is that these tools are necessary in many situations and, in a...
2016-06-01
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The study of the Earth and the environment requires an understanding of the physical processes within and at the surface of the Earth. This book will allow the student to develop a broad working knowledge of mechanics and its application to the...
1994-01-01
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In an effort to better understand the dominant flow processes in semiarid systems, an experiment was conducted in a high instrumented 26 ha catchment in Idaho, USA. Snowmelt from deep snow drifts constitutes the main input into the basin....
1995-01-01
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HISTORY OF DEVELOPMENT
because not all of the diverted water is gaged and practically none of the return flow is measured.
As water exported from the Upper Basin during the same period averages about 315*000 acre-feet, the estimated average Upper...
2008-10-01
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