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Extending Water Resources Performance Metrics To River Ecosystems, Belize A. Lane, J. Pablo Ortiz-Partida, Samuel Sandoval-Solis
Extending Water Resources Performance Metrics To River Ecosystems, Belize A. Lane, J. Pablo Ortiz-Partida, Samuel Sandoval-Solis
Civil and Environmental Engineering Faculty Publications
A persistent challenge in integrated water management is the ability to accurately evaluate human and ecological tradeoffs. Two-dimensional (2D) hydraulic models are frequently used to evaluate water management alternatives concerning aquatic species physical habitat needs or preferences. Recent studies have assessed the timing or duration of suitable habitat conditions, but no standardized approach exists to integrate and interpret ecohydraulic model outputs within a water management framework. Such an approach is needed to maximize the information obtained from model outputs and to facilitate communication between river scientists and water managers. This study presents a general framework to aggregate and summarize 2D …
Assessing Data Availability And Research Reproducibility In Hydrology And Water Resources, James H. Stagge, David E. Rosenberg, Adel M. Abdallah, Hadia Akbar, Nour A. Atallah, Ryan James
Assessing Data Availability And Research Reproducibility In Hydrology And Water Resources, James H. Stagge, David E. Rosenberg, Adel M. Abdallah, Hadia Akbar, Nour A. Atallah, Ryan James
Civil and Environmental Engineering Faculty Publications
There is broad interest to improve the reproducibility of published research. We developed a survey tool to assess the availability of digital research artifacts published alongside peer-reviewed journal articles (e.g. data, models, code, directions for use) and reproducibility of article results. We used the tool to assess 360 of the 1,989 articles published by six hydrology and water resources journals in 2017. Like studies from other fields, we reproduced results for only a small fraction of articles (1.6% of tested articles) using their available artifacts. We estimated, with 95% confidence, that results might be reproduced for only 0.6% to 6.8% …
A Data Model To Manage Data For Water Resources Systems Modeling, Adel M. Abdallah, David E. Rosenberg
A Data Model To Manage Data For Water Resources Systems Modeling, Adel M. Abdallah, David E. Rosenberg
Civil and Environmental Engineering Faculty Publications
Current practices to identify, organize, analyze, and serve data to water resources systems models are typically model and dataset-specific. Data are stored in different formats, described with different vocabularies, and require manual, model-specific, and time-intensive manipulations to find, organize, compare, and then serve to models. This paper presents the Water Management Data Model (WaMDaM) implemented in a relational database. WaMDaM uses contextual metadata, controlled vocabularies, and supporting software tools to organize and store water management data from multiple sources and models and allow users to more easily interact with its database. Five use cases use thirteen datasets and models focused …
Climate Change Impacts On Water Resources Of The Upper Blue Nile River Basin, Ethiopia, U. Kim, Jagath J. Kaluarachchi, V. U. Smakhtin
Climate Change Impacts On Water Resources Of The Upper Blue Nile River Basin, Ethiopia, U. Kim, Jagath J. Kaluarachchi, V. U. Smakhtin
Civil and Environmental Engineering Faculty Publications
Climate change affects water resources availability of international river basins that are vulnerable to runoff variability of upstream countries especially with increasing water demands. The upper Blue Nile River Basin is a good example because its downstream countries, Sudan and Egypt, depend solely on Nile waters for their economic development. In this study, the impacts of climate change on both hydrology and water resources operations were analyzed using the outcomes of six different general circulation models (GCMs) for the 2050s. The outcomes of these six GCMs were weighted to provide average future changes. Hydrologic sensitivity, flow statistics, a drought index, …
Assessment Of Climate Change Impacts On Water Resources Of The Upper Blue Nile River Basin, Ethiopia, U. Kim, Jagath J. Kaluarachchi
Assessment Of Climate Change Impacts On Water Resources Of The Upper Blue Nile River Basin, Ethiopia, U. Kim, Jagath J. Kaluarachchi
Civil and Environmental Engineering Faculty Publications
Climate change affects water resources availability of international river basins that are vulnerable to runoff variability of upstream countries especially with increasing water demands. The upper Blue Nile River Basin is a good example because its downstream countries, Sudan and Egypt, depend solely on Nile waters for their economic development. In this study, the impacts of climate change on both hydrology and water resources operations were analyzed using the outcomes of six different general circulation models (GCMs) for the 2050s. The outcomes of these six GCMs were weighted to provide average future changes. Hydrologic sensitivity, flow statistics, a drought index, …
Optimizing Integrated Water Resources Management: Data, Tools, And Examples, Richard C. Peralta
Optimizing Integrated Water Resources Management: Data, Tools, And Examples, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
Best utilizing water resources requires coordinating their availability and use in time and space. Required can be: spatially and temporally distributed data; simulators to predict system response to stimuli; procedures for defining management goals, constraints, and scenarios; optimizers to compute optimal management strategies; and appropriate strategy implementation techniques. Here, a strategy is a set of controllable groundwater extraction and injection rates and surface water diversions. Simulation/optimization (S/O) models couple simulators and optimizers to compute optimal strategies for posed management problems. S/O models are becoming more commonly used for policy, planning, system design, and management. For example, water planners and managers …
Software For Optimizing International Water Resources Management, Richard C. Peralta, S. Wu
Software For Optimizing International Water Resources Management, Richard C. Peralta, S. Wu
Civil and Environmental Engineering Faculty Publications
The Simulation/Optimization MOdeling System (SOMOS) has modules adapted for a range of international water resource management needs. The SOMOA module is best for field groundwater and conjunctive water management situations. It employs several analytical simulation models and several optimization methods to give appropriate optimal guidance for situations having sparse data. SOMOA requires understanding of the limitations of common analytical equations. It does not require experience in finite difference or element numerical modeling. SOMOS also has modules ideal for situations in which there is sufficient data for numerical modeling or aquifer and stream-aquifer systems. Emphasized here are SOMOA and its applications …
Water Resources Development Alternatives For The Mississippi Alluvial Plain In Eastern Arkansas, Gary L. Mahon, John E. Terry, Richard C. Peralta
Water Resources Development Alternatives For The Mississippi Alluvial Plain In Eastern Arkansas, Gary L. Mahon, John E. Terry, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
Effective management of the water resources of the Mississippi Alluvial Plain in eastern Arkansas involves understanding the nature of existing problems, estimating total water demands, predicting how much of the total demand can be provided by the underlying aquifer and available surface-water sources, and deducing how much water must come from alternate sources. Various Federal and State agencies have cooperatively provided hydrologic information for the area to evaluate water-resources development alternatives ensuring that (1) the use of water from the aquifer be maximized while maintaining a minimum of 20 feet of saturated thickness, (2) the use of surface water be …
Interactive Modification Of Quadratic Multiobjective Water Resources Planning Strategies, Paul J. Killian, Richard C. Peralta
Interactive Modification Of Quadratic Multiobjective Water Resources Planning Strategies, Paul J. Killian, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
An interactive method is presented for modifying a mtltiobjective water resources planning strategy by changing constraining conditions on regional objectives and local variables. The method is illustrated by modifying a conjunctive use. sustained groundwater withdrawal strategy for minimizing the cost of meeting regional water demand on the Arkansas Grand Prairie. The strategy was developed using a model in which the finite difference form of the two-dimensional groundwater flow equation is embedded in an optimization process. The quadratic optimization is accomplished by utilizing the General Differential Algorithm to obtain values of drawdown. pumping. and recharge in each finite difference cell. Results …
Potential Conjunctive Water Resources Use Plan For The Grand Prairie Region Of Eastern Arkansas, Ahmad Y. Ranjha, Richard C. Peralta, Amin Yazdanian
Potential Conjunctive Water Resources Use Plan For The Grand Prairie Region Of Eastern Arkansas, Ahmad Y. Ranjha, Richard C. Peralta, Amin Yazdanian
Civil and Environmental Engineering Faculty Publications
The main objective of this study is to develop two conjunctive water use strategies that can satisfy maximum potential irrigation water demand in the Grand Prairie region of Arkansas. for climatically average growing seasons. To accomplish this. the potential irrigation demand in each 3 mile x 3 mile cell of the study area is first determined on a monthly and seasonal basis for average climatic conditions. The potential demand is also calculated for dry climatic conditions. although these latter demand figures are not used in developing the potential conjunctive water use strategies.