Journal of Water Resources Planning and Management

Includes bibliographical references.

Examining trade-offs in piggybacking flow events while making environmental release decisions in a river system -- Effects of hydrologic conditions and reservoir operation on transboundary cooperation in the lancang-mekong river basin -- Transforming global climate model precipitation output for use in urban stormwater applications -- Deficiency of reliability indicators in water distribution networks -- Potentials implications of groundwater trading and reformed water rights in diamond valley, nevada -- Comparing the economic and environmental effects of different water management schemes using a coupled agent-hydrologic model -- New Transbound hydrographic data set for advancing regional hydrological modeling and water resources management -- Discussion of "Leakage control and energy recovery using variable speed pumps as turbines" by Gustavo Meirelles Lima, Edevar Luvizotto Jr., Bruno Melo Brentan, and Helena M. Ramos.

[Article Title: Examining Trade-Offs in Piggybacking Flow Events while Making Environmental Release Decisions in a River System / Simranjit Kaur, Avril C. Horne, Rory Nathan, Joanna M. Szemis, Laura Gibson, Alysson M. Costa, J. Angus Webb, and Michael Stewardson, p.1-10] Abstract: High flow pulses (or spells or freshes) play a crucial role in maintaining the ecological health of a river system. Impoundment of water in a reservoir and release or diversion of water for human water needs has significantly altered the magnitude and frequency of flow pulses in many river systems, often reducing river ecological health. A limited volume of water is sometimes available for release into the river to reintroduce pulses specifically aimed at meeting ecological requirements (environmental water). If aiming to achieve maximum environmental benefit, such releases from the reservoir should be timed to augment or piggyback natural unregulated catchment flow events.;[Article Title: Effects of Hydrologic Conditions and Reservoir Operation on Transboundary Cooperation in the Lancang-Mekong River Basin / Yang Yu, Jianshi Zhao, Dongnan Li, and Zhongjing Wang, p. 1-12] Abstract: Multiple stakeholders in transboundary river basins would benefit from cooperation, but how and why stakeholders can achieve this cooperation remains difficult to determine. This paper proposes an approach for analyzing the effect of the cascade reservoir system operation under varying hydrologic conditions on transboundary cooperation, taking the Lancang-Mekong River as a case study.;[Article Title: Transforming Global Climate Model Precipitation Output for Use in Urban Stormwater Applications / M. Maimone, S. Malter, J. Rockwell, and V. Raj, p. 1-11] Abstract: Statistically downscaled global climate model (GCM) precipitation output is available for Philadelphia, but the temporal resolution is too low for direct use in model-based urban stormwater applications. Additionally, GCM output for Philadelphia does not accurately represent local storm intensities and durations. To address these limitations, this study presents an innovative approach employed by the Philadelphia Water Department (PWD) to transform GCM output into actionable science that can directly inform planning, design, and engineering applications, including hydrologic and hydraulic (H&H) modeling and intensity-duration-frequency curve development. ;[Article Title: Deficiency of Reliability Indicators in Water Distribution Networks / H. Monsef, M. Naghashzadegan, R. Farmani, and A. Jamali, p. 1-10] Abstract: In recent studies about reliability analysis of water distribution systems (WDSs), different reliability indicators have been used to measure and compare the reliability of water networks. These indicators have been used as objective functions in WDS optimization design problems alongside network construction cost. In this research, it is shown that these prevalent indicators cannot completely model the ability of networks in the face of abnormal operational conditions such as nodal demand changes or pipe burst. ;[Article Title: Potential Implications of Groundwater Trading and Reformed Water Rights in Diamond Valley, Nevada / Harrison Zeff, David Kaczan, Gregory W. Characklis, Marc Jeuland, Brian Murray, and Katie Locklier, p. 1-19] Abstract: This paper presents an ex ante analysis of a novel groundwater management reform being considered by irrigators in the Diamond Valley, Nevada. Groundwater extraction for irrigation in the valley has considerably exceeded the natural recharge rate since the 1960s. The area was recently declared a critical management area (CMA) by the State Engineer of Nevada, which will trigger curtailment of water rights unless other action halts unsustainable abstraction. We examined the likely impacts of a number of potential institutional structures that could be implemented as part of groundwater reform in the Diamond Valley.;[Article Title: Comparing the Economic and Environmental Effects of Different Water Management Schemes Using a Coupled Agent-Hydrologic Model / Xiaowen Lei, Jianshi Zhao, Yi-Chen E. Yang, and Zhongjing Wang, p. 1-12] Abstract: Confronted with diverse water management schemes, policymakers in arid basins face difficulty in choosing a particular scheme due to a lack of appropriate tools to estimate possible physical and economic outcomes in a comprehensive manner. This study develops a coupled agent-hydrologic model to both capture and provide insights into the dynamics and patterns of real-world water management using the midstream area of the Heihe River Basin in northern China as a case study.;[Article Title: New Transboundary Hydrographic Data Set for Advancing Regional Hydrological Modeling and Water Resources Management / Lacey A. Mason, Andrew D. Gronewold, Michael Laitta, David Gochis, Kevin Sampson, Laura Read, Erika Klyszejko, Judy Kwan, Lauren Fry, Kimberly Jones, Peter Steeves, Alain Pietroniro, and Mike Major, p. 1-6] Abstract: The authors document the development and testing of a new suite of hydrologic and hydraulic data for the customization of the new National Water Model (NWM) to the Great Lakes basin. The NWM was recently (August 2016) deployed operationally across the United States, including extensions across the international basins of the Columbia and Rio Grande Rivers.;[Article Title: Leakage Control and Energy Recovery Using Variable Speed Pumps as Turbines / Gustavo Meirelles Lima, Edevar Luvizotto Jr., Bruno Melo Brentan, and Helena M. Ramos, p. 1-3] Abstract: One of the primary concerns in water supply systems is pressure control. High pressure increases both leakage and the risk of pipes bursting, while low pressure can reduce the water supplied to consumers and allow the intrusion of pathogens. Therefore, the operation of the equipment must be optimized to avoid such problems. In high pressure zones, pressure reducing valves (PRVs) are commonly used for pressure control. However, the energy dissipated from head loss could be recovered to produce electrical energy.