Browsing by Author "Wurbs, Ralph A."
Now showing items 1-20 of 46
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Hao, Zengchao (2012-07-16)The dissertation focuses on the application of entropy theory in hydrologic analysis and simulation, namely, rainfall analysis, streamflow simulation and drought analysis. The extreme value distribution has been employed ...
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Kim, Zooho (2013-03-13)Changes in the bed of Geum River (L=130 km from Daechung regulation dam to Geum River estuarial bank) in South Korea were predicted using the 1-D HEC-RAS model and the 2-D CCHE2D model. Three movable weirs have been installed ...
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Beissel, Sheila Ann (1986)Texas' water demand is steadily increasing. In the past, ground water was used to meet the majority of demand. However, this continuing withdrawal is causing many problems. Because of this situation, the state is now turning ...
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Dutta, Deba P. (2010-01-15)Characteristics of emitters under low pressure are essential for designing drip irrigation systems. Low pressure data for drip emitters are not available from manufacturers. A laboratory test was conducted to evaluate the ...
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Wurbs, Ralph A. (Texas Water Resources Institute, 2005-04)This report reviews user-oriented generalized reservoir/river system models. The terms reservoir/river system, reservoir system, reservoir operation, or river basin management "model" or "modeling system" are used synonymously ...
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Wurbs, Ralph A.; Sisson, Emery (Texas Water Resources Institute, 1999-08)The investigation documented by this report consists of identifying, developing, and evaluating alternative approaches for estimating sequences of monthly naturalized streamflows at ungaged sites based on known naturalized ...
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Salazar, A. Andres; Wurbs, Ralph A. (Texas Water Resources Institute, 2003)
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Salazar, A. Andres; Wurbs, Ralph A. (Texas Water Resources Institute, 2002)The objective of this research was to develop a conditional reliability model that would support short-term river basin management activities in which consideration of current reservoir storage levels is important. The ...
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Hoffpauir, Richard James (2011-02-22)Surface water availability models often use monthly simulation time steps for reasons of data availability, model parameter parsimony, and reduced computational time. Representing realistic streamflow variability, ...
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Kim, Keu Whan (Texas A&M University. Libraries, 1986)A distributed watershed model was developed to mathematically simulate routing overland and channel flow for a single-event storm. The watersheds used in the study were subdivided into rectangular grid elements. All ...
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Estimation of Velocity Distribution and Suspended Sediment Discharge in Open Channels Using Entropy Cui, Huijuan (2011-08-08)In hydraulics, velocity distribution is needed to determine flow characteristics, like discharge, sediment discharge, head loss, energy coefficient, moment coefficient, and scour. However, the complicated interaction between ...
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Evaluation of Storage Reallocation and Related Strategies for Optimizing Reservoir System Operations Wurbs, Ralph A.; Carriere, Patrick E. (Texas Water Resources Institute, 1988-08)Statement of the Problem Rapid population and economic growth combined with depleting groundwater reserves are resulting in ever increasing demands on surface water resources in Texas, as well as elsewhere. The climate ...
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Kline, Karen Showalter (Texas A&M University. Libraries, 1988)A simulation model of hourly rainfall amounts was developed to provide hourly precipitation input to a water balance model. The hourly rainfall model consists of four parts: (1) daily rainfall occurrence, (2) event rainfall ...
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Wurbs, Ralph A. (Texas Water Resources Institute, 2005-04)
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Wurbs, Ralph A. (Texas Water Resources Institute, 2011-09)Water resources development, water allocation, and river/reservoir system operations are simulated with the Water Rights Analysis Package (WRAP) using sequences of historical naturalized stream flows and reservoir surface ...
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Wurbs, Ralph A.; Bergman, Carla E.; Carriere, Patrick E.; Walls, W. Brian (Texas Water Resources Institute, 1988-08)Statement of the Problem Effective management of its surface water resources is essential to the continued growth and prosperity of the state of Texas. Rapid population and economic growth combined with depleting ground ...
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Lee, Chi Hun (2011-08-08)Salinity is a major determinant of where and how water resources are used worldwide. Natural salt pollution severely constrains the beneficial use of large amounts of water in Texas and neighboring states. High salinity ...
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Long, Di (2012-10-19)The overall objective of the dissertation was to improve the spatial and temporal representation and retrieval accuracy of evapotranspiration (ET) using satellite imagery. Specifically, (1) aiming at improving the spatial ...
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Arslan, Cemil (2019-11-15)Water resources management, development, allocation, and protection in system engineering has become increasingly essential to ensure sustainability, protect the ecosystem, and raise water availability. Depending on the ...
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Chun, Gunil (2018-10-17)Population and economic growth have contributed to increasing water uses while available water resources are limited. Recently, the occurrence and damage of drought are increasing worldwide due to the impact of climate ...