Reservoir Sedimentation

Morris, Gregory L.; Annandale, George W.; Hotchkiss, Rollin H.

doi:10.1061/9780784408148.ch12

Cited by 117 publications

(127 citation statements)

References 42 publications

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“…It is generally not considered to be economically feasible. Palimeri et al [2003] estimated the cost to replace the lost storage (adding 45 km 3 per year) to be US$13 billion, not counting the social and environmental cost associated with the construction of new reservoirs; however, many silted reservoirs cannot simply be replaced by other reservoirs because of site characteristics [Morris and Fan, 1998]. There are also costs and environmental problems associated with decommissioning dams [Palmieri et al, 2001].…”

Section: Uncertaintiesmentioning

confidence: 99%

“…The reduction of sediment flux has implications for coastal retreat and the export of minerals and nutrients from the continents to the oceans [Syvitski et al, 2005]. Sedimentation within reservoirs has many ecological and engineering effects [Morris and Fan, 1998], including accelerated eutrophication and loss of habitat [Hargrove et al, 2010], morphological changes [De Araujo et al, 2006], and interference with the outlet works or hydropower intakes [Graf et al, 2010].…”

Section: Introductionmentioning

confidence: 99%

“…Dams are planned, designed, and operated for a finite life time [Wang, 2005], in some cases as short as 100 years [Morris and Fan, 1998]. Many of the large reservoirs in the US, designed for 150-200 years, have had their life time reduced by 50-100 years due to sedimentation [Hargrove et al, 2010] and a significant loss of storage is observed in many regions of the world.…”

Section: Introductionmentioning

confidence: 99%

“…[5] Sedimentation of reservoirs usually happens faster than the loss of integrity of the structure itself [Morris and Fan, 1998]; the lifetime and the sustainability of a reservoir is, therefore, controlled by the sedimentation. Dams are planned, designed, and operated for a finite life time [Wang, 2005], in some cases as short as 100 years [Morris and Fan, 1998].…”

Section: Introductionmentioning

confidence: 99%

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Beyond peak reservoir storage? A global estimate of declining water storage capacity in large reservoirs

et al. 2013

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[1] Water storage is an important way to cope with temporal variation in water supply and demand. The storage capacity and the lifetime of water storage reservoirs can be significantly reduced by the inflow of sediments. A global, spatially explicit assessment of reservoir storage loss in conjunction with vulnerability to storage loss has not been done. We estimated the loss in reservoir capacity for a global data set of large reservoirs from 1901 to 2010, using modeled sediment flux data. We use spatially explicit population data sets as a proxy for storage demand and calculate storage capacity for all river basins globally. Simulations suggest that the net reservoir capacity is declining as a result of sedimentation ($5% compared to the installed capacity). Combined with increasing need for storage, these losses challenge the sustainable management of reservoir operation and water resources management in many regions. River basins that are most vulnerable include those with a strong seasonal flow pattern and high population growth rates such as the major river basins in India and China. Decreasing storage capacity globally suggests that the role of reservoir water storage in offsetting sea-level rise is likely weakening and may be changing sign.Citation: Wisser, D., S. Frolking, S. Hagen, and M. F. P. Bierkens (2013), Beyond peak reservoir storage? A global estimate of declining water storage capacity in large reservoirs, Water Resour. Res., 49, 5732-5739,

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Section: Uncertaintiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Beyond peak reservoir storage? A global estimate of declining water storage capacity in large reservoirs

et al. 2013

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“…The sites for the core collection were 1650 m apart, and they were selected carefully to have a complete sequence of the deposit in the reservoir. In addition, we attempted to avoid the areas close to the delta mouth at the entrance of the reservoir because of the high flow energy and the predominance of tractive processes that can disturb the sequence of the sediments deposited in this areas of the reservoirs (Morris and Fan 1997). Similarly, the areas close to the delta dam were also excluded because sediments accumulate here in a fan shape, with frequent reworking and resedimentation processes that alter the sedimentological sequence.…”

Section: Core Sampling and Analysesmentioning

confidence: 99%

Reconstructing the history of sediment accumulation in the Yesa reservoir: an approach for management of mountain reservoirs

Izquierdo

Garcés

Gaspar

et al. 2009

Lake and Reservoir Management

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Potential accumulation of contaminated sediments in a reservoir of a high‐Andean watershed: Morphodynamic connections with geochemical processes

Contreras

Müllendorff

Pastén

et al. 2015

Water Resources Research

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Rapid changes due to anthropic interventions in high-altitude environments, such as the Altiplano region in South America, require new approaches to understand the connections between physical and geochemical processes. Alterations of the water quality linked to the river morphology can affect the ecosystems and human development in the long term. The future construction of a reservoir in the Lluta River, located in northern Chile, will change the spatial distribution of arsenic-rich sediments, which can have significant effects on the lower parts of the watershed. In this investigation, we develop a coupled numerical model to predict and evaluate the interactions between morphodynamic changes in the Lluta reservoir, and conditions that can potentially desorb arsenic from the sediments. Assuming that contaminants are mobilized under anaerobic conditions, we calculate the oxygen concentration within the sediments to study the interactions of the delta progradation with the potential arsenic release. This work provides a framework for future studies aimed to analyze the complex connections between morphodynamics and water quality, when contaminant-rich sediments accumulate in a reservoir. The tool can also help to design effective risk management and remediation strategies in these extreme environments.

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Reservoir Sedimentation

Cited by 117 publications

References 42 publications

Beyond peak reservoir storage? A global estimate of declining water storage capacity in large reservoirs

Beyond peak reservoir storage? A global estimate of declining water storage capacity in large reservoirs

Reconstructing the history of sediment accumulation in the Yesa reservoir: an approach for management of mountain reservoirs

Potential accumulation of contaminated sediments in a reservoir of a high‐Andean watershed: Morphodynamic connections with geochemical processes

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