Download or read book Ground water Hydrology of the Upper Deschutes Basin Oregon written by and published by . This book was released on 2001 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geologic Framework of the Regional Ground water Flow System in the Upper Deschutes Basin Oregon written by Kenneth E. Lite and published by . This book was released on 2002 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book University of Washington Publications in Geology written by and published by . This book was released on 1916 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tectonic and Magmatic Evolution of the Snake River Plain Volcanic Province written by Bill Bonnichsen and published by Idaho Geological Survey. This book was released on 2002 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regional Aquifer system Analysis written by David E. Prudic and published by . This book was released on 1998 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The California Earthquake of April 18 1906 written by California. State Earthquake Investigation Commission and published by . This book was released on 1910 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology Mineral Resources of Douglas County Oregon written by Len Ramp and published by . This book was released on 1972 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geologic Field trip Guide to the Volcanic and Hydrothermal Landscape of the Yellowstone Plateau written by Lisa A. Morgan and published by Government Printing Office. This book was released on 2017 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Groundwater Simulation and Management Models for the Upper Klamath Basin Oregon and California written by Marshall W. Gannett and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The upper Klamath Basin encompasses about 8,000 square miles, extending from the Cascade Range east to the Basin and Range geologic province in south-central Oregon and northern California. The geography of the basin is dominated by forested volcanic uplands separated by broad interior basins. Most of the interior basins once held broad shallow lakes and extensive wetlands, but most of these areas have been drained or otherwise modified and are now cultivated. Major parts of the interior basins are managed as wildlife refuges, primarily for migratory waterfowl. The permeable volcanic bedrock of the upper Klamath Basin hosts a substantial regional groundwater system that provides much of the flow to major streams and lakes that, in turn, provide water for wildlife habitat and are the principal source of irrigation water for the basin's agricultural economy. Increased allocation of surface water for endangered species in the past decade has resulted in increased groundwater pumping and growing interest in the use of groundwater for irrigation. The potential effects of increased groundwater pumping on groundwater levels and discharge to springs and streams has caused concern among groundwater users, wildlife and Tribal interests, and State and Federal resource managers. To provide information on the potential impacts of increased groundwater development and to aid in the development of a groundwater management strategy, the U.S. Geological Survey, in collaboration with the Oregon Water Resources Department and the Bureau of Reclamation, has developed a groundwater model that can simulate the response of the hydrologic system to these new stresses. The groundwater model was developed using the U.S. Geological Survey MODFLOW finite-difference modeling code and calibrated using inverse methods to transient conditions from 1989 through 2004 with quarterly stress periods. Groundwater recharge and agricultural and municipal pumping are specified for each stress period. All major streams and most major tributaries for which a substantial part of the flow comes from groundwater discharge are included in the model. Groundwater discharge to agricultural drains, evapotranspiration from aquifers in areas of shallow groundwater, and groundwater flow to and from adjacent basins also are simulated in key areas. The model has the capability to calculate the effects of pumping and other external stresses on groundwater levels, discharge to streams, and other boundary fluxes, such as discharge to drains. Historical data indicate that the groundwater system in the upper Klamath Basin fluctuates in response to decadal climate cycles, with groundwater levels and spring flows rising and declining in response to wet and dry periods. Data also show that groundwater levels fluctuate seasonally and interannually in response to groundwater pumping. The most prominent response is to the marked increase in groundwater pumping starting in 2001. The calibrated model is able to simulate observed decadal-scale climate-driven fluctuations in the groundwater system as well as observed shorter-term pumping-related fluctuations. Example model simulations show that the timing and location of the effects of groundwater pumping vary markedly depending on the pumping location. Pumping from wells close (within a few miles) to groundwater discharge features, such as springs, drains, and certain streams, can affect those features within weeks or months of the onset of pumping, and the impacts can be essentially fully manifested in several years. Simulations indicate that seasonal variations in pumping rates are buffered by the groundwater system, and peak impacts are closer to mean annual pumping rates than to instantaneous rates. Thus, pumping effects are, to a large degree, spread out over the entire year. When pumping locations are distant (more than several miles) from discharge features, the effects take many years or decades to fully impact those features, and much of the pumped water comes from groundwater storage over a broad geographic area even after two decades. Moreover, because the effects are spread out over a broad area, the impacts to individual features are much smaller than in the case of nearby pumping. Simulations show that the discharge features most affected by pumping in the area of the Bureau of Reclamation's Klamath Irrigation Project are agricultural drains, and impacts to other surface-water features are small in comparison. A groundwater management model was developed that uses techniques of constrained optimization along with the groundwater flow model to identify the optimal strategy to meet water user needs while not violating defined constraints on impacts to groundwater levels and streamflows. The coupled groundwater simulation-optimization models were formulated to help identify strategies to meet water demand in the upper Klamath Basin. The models maximize groundwater pumping while simultaneously keeping the detrimental impacts of pumping on groundwater levels and groundwater discharge within prescribed limits. Total groundwater withdrawals were calculated under alternative constraints for drawdown, reductions in groundwater discharge to surface water, and water demand to understand the potential benefits and limitations for groundwater development in the upper Klamath Basin. The simulation-optimization model for the upper Klamath Basin provides an improved understanding of how the groundwater and surface-water system responds to sustained groundwater pumping within the Bureau of Reclamation's Klamath Project. Optimization model results demonstrate that a certain amount of supplemental groundwater pumping can occur without exceeding defined limits on drawdown and stream capture. The results of the different applications of the model demonstrate the importance of identifying constraint limits in order to better define the amount and distribution of groundwater withdrawal that is sustainable.

Download or read book Preliminary Determination of Epicenters written by and published by . This book was released on 1970 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Tertiary Formations of Western Washington written by Charles Edwin Weaver and published by . This book was released on 1916 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highlights in Marine Research written by and published by . This book was released on 1984 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reports and abstracts in this volume illustrates the breadth and depth of U.S. Geological Survey (USGS) research in marine geology.

Download or read book The Historical Archaeology of Virginia from Initial Settlement to the Present written by Clarence R. Geier and published by Createspace Independent Publishing Platform. This book was released on 2017-02-10 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book includes six chapters that cover Virginia history from initial settlement through the 20th century plus one that deals with the important role of underwater archaeology. Written by prominent archaeologists with research experience in their respective topic areas, the chapters consider important issues of Virginia history and consider how the discipline of historic archaeology has addressed them and needs to address them . Changes in research strategy over time are discussed , and recommendations are made concerning the need to recognize the diverse and often differing roles and impacts that characterized the different regions of Virginia over the course of its historic past. Significant issues in Virginia history needing greater study are identified.

Download or read book Geological Survey Research 1964 written by Geological Survey (U.S.) and published by . This book was released on 1964 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geologic Studies in Alaska by the U S Geological Survey During 1987 written by and published by . This book was released on 1988 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cenozoic Paleogeography of the Western United States written by John M. Armentrout and published by . This book was released on 1979 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laboratory Manual for Introductory Geology written by Bradley Deline and published by . This book was released on 2016-01-05 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developed by three experts to coincide with geology lab kits, this laboratory manual provides a clear and cohesive introduction to the field of geology. Introductory Geology is designed to ease new students into the often complex topics of physical geology and the study of our planet and its makeup. This text introduces readers to the various uses of the scientific method in geological terms. Readers will encounter a comprehensive yet straightforward style and flow as they journey through this text. They will understand the various spheres of geology and begin to master geological outcomes which derive from a growing knowledge of the tools and subjects which this text covers in great detail.