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Reservoirs are ubiquitous water infrastructure, providing functional capability to manage, and often mitigate, hydrological variability across space and time. The presence and operation of a reservoir control the downstream flow regime, such that in many locations understanding reservoir operations is crucial to understanding the hydrological functioning of a catchment. Despite many advances in modelling reservoir operations, inclusion of reservoirs in large-scale hydrological modelling remains challenging, particularly when the number of reservoirs is large and data access is limited. Here we design a set of simple reservoir operating rules (with only two calibrated parameters) focused on simulating small water supply reservoirs across large scales with various types of open-access data (i.e. catchment attributes and flows at downstream gauges). We integrate our rules into a national-scale hydrological model of Great Britain and compare hydrological simulations with and without the new reservoir component. Our simple reservoir operating rules significantly increase model performance in reservoir-impacted catchments, particularly when the rules are calibrated individually at each downstream gauge. We also test the feasibility of using transfer functions (which transform reservoir and catchment attributes into operating rule parameters) to identify a nationally consistent calibration. This works well in ∼ 50 % of the catchments, while nuances in individual reservoir operations limit performance in others. We suggest that our approach should provide a lower benchmark for simulations in catchments containing water supply reservoirs and that more complex methods should only be considered where they outperform our simple approach. [ABSTRACT FROM AUTHOR]

The Board of Editors of the South Dakota Law Review is pleased to dedicate Volume 66 to Professor Emeritus Jonathan Van Patten. Jon Van Patten was born in Los Angeles, [...]

PROFESSOR EMERITUS FRANK POMMERSHEIM The Board of Editors of the South Dakota Law Review is pleased to dedicate Volume 65 to Professor Emeritus Frank Pommersheim. Frank Pommersheim was born in [...]

I. INTRODUCTION Readers of the South Dakota Law Review who are on the alert for South Dakota Evidence Code updates received their last one in 2014. Given the activity from [...]

JUSTICE JOHN K. KONENKAMP JOINT DEDICATION The Review is honored to jointly dedicate Volume 60 to Justice John K. Konenkamp, who is retiring after twenty years of service on the [...]

Discusses the decision to implement a drug and alcohol testing program, analyzing how such programs fit within the traditional functions of criminal and administrative law, pinpoints some messages conveyed by testing programs, and discusses factual premises that should underlay such programs. Reviews recent U.S. Supreme Court rulings and gauges impact on searches of school children. (231 references) (MLH)

John Hagemann graduated from the University of Wisconsin School of Law and began his teaching career at the University of South Dakota School of Law in 1968. That career spanned [...]

The article focuses on the application of the Federal Rules of Evidence (FRE) in South Dakota. Topics discussed include the implementation of the FRE being a giant step according to judge James Adams, the importance of codification of the FRE, changes to the motions in limine in the discussed in First Premier Bank v. Kolcraft Enterprises, changes to judicial notice in the FRE, burden of proof and expert testimony discussed in the FRE and the use of the Confrontation Clause.