Toward an operational approach for the characterization and modelling of fine sediments dynamics in reservoirs

Peteuil, Christophe; Jodeau, Magali; Linares, M. de; Valette, Élodie; Alliau, Damien; Wirz, Carole; Fretaud, T.; Antoine, Germain; Secher, Matthieu

doi:10.1051/e3sconf/20184003028

Cited by 3 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, hydrological variability as a result of climate change [61][62][63] and human interactions such as land clearance may also increase soil erosion and subsequently sediment loads in rivers, leading to increased reservoir sedimentation. Therefore, development and implementation of sustainable sediment management techniques to maintain sufficient reservoir storage on a long term has become increasingly important in meeting rising water and energy demands (e.g., [2,64]). Traditionally, reservoirs are designed for a lifetime of 50 to 100 years [41,65], leading to societal, environmental and economical problems beyond the designed lifetime.…”

Section: Sedimentsmentioning

confidence: 99%

“…Due to population growth and changes in lifestyle the demands on water bodies are constantly rising and diversifying [1]. This incorporates interests like drinking and irrigation water supply, flood protection, energy production or navigation [2]. It is estimated that around 58,000 large dams are built, planned or under construction worldwide, a trend which will likely accelerate in the future [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management

et al. 2021

View full text Add to dashboard Cite

Reservoirs are a common way to store and retain water serving for a multitude of purposes like storage of drinking and irrigation water, recreation, flood protection, navigation, and hydropower production, and have been built since centuries. Today, few reservoirs serve only one purpose, which requires management of present demands and interests. Since each reservoir project will cause negative impacts alongside desired advantages both on a local, regional and global scale, it is even more urgent to develop a common management framework in an attempt to mitigate negative impacts, incorporate different demands and make them visible within the discourse in order to avoid conflicts from early on. The scientific publications on reservoirs are manifold, yet a comprehensive and integrative holistic tool about management of this infrastructure is not available. Therefore, a comprehensive and integrated conceptual tool was developed and proposed by the authors of this paper that can contribute to the sustainable management of existing reservoirs. The tool presented herein is based on the results from the interdisciplinary CHARM (CHAllenges of Reservoir Management) project as well as the condensed outcome of relevant literature to aid and enhance knowledge of reservoir management. The incorporated results are based on field, laboratory and empirical social research. The project CHARM focused on five different aspects related to existing reservoirs in southern Germany (Schwarzenbachtalsperre, Franconian Lake District), namely: sedimentation of reservoirs, biostabilisation of fine sediments, toxic cyanobacteria(l) (blooms), greenhouse gas emissions from reservoirs and social contestation, respectively consent. These five research foci contributed to the topics and setup of a conceptual tool, put together by the research consortium via delphi questioning, which can be found alongside this publication to provide insights for experts and laymen. Conceptualising and analysing the management in combination with quantitative and qualitative data in one descriptive tool presents a novelty for the case studies and area of research. The distribution within the scientific community and interested public will possibly make a positive contribution to the goal of sustainable water resources management in the future.

show abstract

Section: Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management

et al. 2021

View full text Add to dashboard Cite

show abstract

Reservoir Mud Releasing May Suboptimize Fluvial Sand Supply to Coastal Sediment Budget: Modeling the Impact of Shihmen Reservoir Case on Tamsui River Estuary

Hsueh,

Wu,

et al. 2024

Water Resources Research

View full text Add to dashboard Cite

Regular release of sediment from reservoir has been increasingly adopted as a strategy for sustainable management. Here, we use a process‐based morphodynamic model to simulate the estuarine sediment dynamics impacted by turbidity current venting implemented by the Shihmen Reservoir during three typhoon events in 2008. Upon validation with the post‐event bathymetries, the model hindcasts reveal that mud releasing can be effective in mitigating reservoir siltation, yet may be a suboptimal strategy for alleviating coastal sediment deficit. A vast majority of the released muds were delivered through the estuary and exported to offshore by flood advection, wave dispersion, and tidal flushing. The flood‐driven sands, sourced mainly from downstream tributaries, were instead the major contributor to coastal sediment budget. However, mud mantling (covering and immobilizing sand deposits by the reservoir‐released muds) reduced sand availability and thus sand delivery to the coast. For the present case, 25% of the released muds were deposited along the way, presence of these mud covers reduced sand delivery by 15%, compared to a hypothetical scenario of clear‐water flood releases. The relative sand transport deficit is found to increase linearly with the degree of bed mud saturation, 1–D/R, with D/R the ratio of single‐event mud deposit to release. Given broad relevance to global reservoirs encountering the problems of siltation and coastal sediment deficit, our findings highlight that sustainable management needs to look beyond just a bulk amount of sediment, but it is critical to consider how different sediment fractions are interacting and impacted by human activities.

show abstract

Functional Relationships between Critical Erosion Thresholds of Fine Reservoir Sediments and Their Sedimentological Characteristics

et al. 2022

View full text Add to dashboard Cite

Toward an operational approach for the characterization and modelling of fine sediments dynamics in reservoirs

Cited by 3 publications

References 12 publications

Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management

Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management

Reservoir Mud Releasing May Suboptimize Fluvial Sand Supply to Coastal Sediment Budget: Modeling the Impact of Shihmen Reservoir Case on Tamsui River Estuary

Functional Relationships between Critical Erosion Thresholds of Fine Reservoir Sediments and Their Sedimentological Characteristics

Contact Info

Product

Resources

About