Blocking the natural bi-directional flow in an estuarine system using an artificial dyke has commonly caused serious water quality problems. In the southwestern part of South Korea, a parallel triple-reservoir system was constructed by blocking the mouth of three different rivers (Yeongsan, Okcheon, and Kumja), which were then interconnected using two open channels. This system has experienced ...

Dam construction is widespread, changing the hydrological and biogeochemical conditions thereby bacterial communities in rivers of earth. To date, knowledge lacking about cascade reservoirs. Here, we investigated potential functions nine hydropower reservoirs 1290 km upper Mekong River (Lancang China). Along reservoir cascade, water temperature, rather than presence dams, was main cause for geo...

Impulse waves feature tsunami-like characteristics and are generated by very rapid mass wasting, including landslides avalanches, into water bodies. In engineered reservoirs, these may run up overtop the dam, thereby exerting hydrostatic dynamic forces on its structure. For this work, solitary were applied as a proxy for impulse acting vertical structures during wave run-up overtopping investig...

As the world’s population increases, the rising demand for water will be compounded further by the need to sustain economic growth (Vörösmarty et al. 2000). According to one report by the United Nations Environment Program (UNEP), the stress on freshwater resources is expected to significantly magnify and spread to other regions of the world by 2025 (see Fig. 1; UNEP 2002). Historically, one of...

The statistical technique like confidence interval (CI) is used to determine the confidence limits of water head over lake tapping site of Koyna Dam (India, Maharashtra) from water level data taken from government of Maharashtra 2000-2010, which helps in future forecasting. It is the statistical technique which gives the Probable Value of the water head in the relative month. By studying these ...

Introduction Piano Key weirs (PKWs) are a hydraulically attractive alternative to linear overflow weirs, increasing the unit discharge at the unregulated spillway inlet for similar heads and spillway widths. This advantage, allowing for operation of dam reservoirs on elevated supply levels thus providing an increased retention volume, is a result of the non-linear nature of PKWs being folded ba...

The value of streamflow forecasts to inform water infrastructure operations has been extensively studied. Yet, their in informing design is still unexplored. In this work, we investigate how dam shaped by information feedbacks supporting the implementation flexible operating policies informed enable less costly reservoirs relative alternatives that do not rely on forecast information. Our appro...

This data article presents a rich original experimental video sources and wide collections of laboratory on water levels, sediment depths wave front celerity values arose from different multiphase dam-break scenarios. The required shock waves in highly silted-up reservoirs with various initial up- down-stream hydraulic conditions is obtained directly high-quality videos. multi-layer were record...

The world currently faces significant hydrologic changes associated with global climate change, such as in precipitation patterns, rising surface temperature, and increases the frequency intensity of floods droughts, which will affect design capacity operating characteristics dams/reservoirs. This brings new challenges to current water management strategies. research is aimed create, apply, pro...

Economic expansion coupled with population growth and associated anthropogenic activities are a threat to water resources globally. This study assessed the dynamics in quality trophic status of one South Africa's hyper-eutrophic reservoirs, Hartbeespoort Dam. Spatio-temporal variability parameters was determined on historical data spanning period forty years (1980-2020), aim determining decadal...