Sedimentation assessment and effects in Venda Nova dam reservoir (Portugal)

Miranda, Mariana N.; Rosa, Christopher T. De; Peres, Ana Cláudia; Maia, Rodrigo

doi:10.1016/j.scitotenv.2020.144261

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…Reservoirs and dams are essential for the sustainable health and well-being of populations as it provides water for human consumption, irrigation, fishing, energy production, recreation, flood control and drought (Buyukyildiz et al, 2014;Luís and Cabral, 2021). However, all reservoirs in the world are increasingly threatened by sedimentation phenomena which impact their storage capacities and operations (Miranda et al, 2021;Schleiss et al, 2016;Shrestha et al, 2022). Sedimentation is a completely natural phenomenon that is not contemporary.…”

Section: Introductionmentioning

confidence: 99%

Impact of flow on the deposition and sediment trapping capacity in a West African reservoir (case of the Lobo River reservoir, west-central of Côte d’Ivoire)

Koffi,

Sanchez,

Kouamé

et al. 2023

Environ Earth Sci

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Built to improve the water supply of the populations of the city of Daloa, the water reservoir of the Lobo River is no longer functioning properly due to sedimentation phenomena. This study aims to understand the hydrosedimentary functioning of the reservoir for better management. Based on the river flows, bathymetric surveys, suspended solids concentrations, settling velocity, a two-dimensional modelling of the flows and sedimentation of the Lobo River reservoir was carried out using the MIKE 21FM/MT software. The simulation results indicate that the hydrodynamic model could reproduce the variation of water levels at the free surface of the reservoir. The results are very sensitive to the boundary conditions of the model but also to the initial conditions. A strong influence of the initial conditions on the long-term stability of the models was observed. It could be seen that in all cases the deposition rate tends towards a final value which only depends on the river flow. The trapping efficiency of the reservoir is between 26.7% and 80.4%. The different simulation scenarios indicate that the deposition thicknesses are between 0.02 and 48 mm and that the deposition occurs when the flow is loaded, during the rise and fall phase of the hydrograph. The old intake, the new intake and the weir are the preferred areas for sediment deposition in the Lobo reservoir.

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Section: Introductionmentioning

confidence: 99%

Impact of flow on the deposition and sediment trapping capacity in a West African reservoir (case of the Lobo River reservoir, west-central of Côte d’Ivoire)

Koffi,

Sanchez,

Kouamé

et al. 2023

Environ Earth Sci

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“…Identifying the dominant areas in sedimentation and erosion is critical for analysis; this aims to provide information for reservoir management (Miranda et al, 2021). The most common problems associated with sedimentation are loss of storage volume, abrasion of hydraulic machines, clogging of outlets, and even damage to dams (Maavara et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The Management of Pusong Reservoir, Lhokseumawe City, Based on the Suspended Sediment Discharge

Lubis

Nasution

Mukhlis

2023

TGEO

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The city of Lhokseumawe often experiences flooding or stagnant rainwater. The Pusong Reservoir that was built could have been ineffective in overcoming the flooding problem due to siltation in the reservoir. Therefore, this study aims to review and recommend the management of the Pusong Reservoir based on suspended sediment discharge which is expected to overcome the silting problem of the reservoir. The sampling method was carried out by determining the stations for sampling based on the environmental baseline in determining the six reservation stations. Samples were analyzed for suspended sediment concentration, turbidity, and incoming sediment discharge. Analysis of suspended sediment concentrations ranged from 9.3 - 50.0 ppm, turbidity ranged from 2.17 - 14.42 NTU, and the incoming suspended sediment discharge was 0.00 - 6946.56 kg/day. Based on the analysis of suspended sediment discharge that enters the reservoir, it is necessary to control sediment transport to prevent siltation does not occur in the Pusong Reservoir. The management of the sediment transport control includes sediment traps, vegetative systems, and Spoil Bank Resulting from Sediment Dredging.Keywords: Suspended Sediment, Management, Pusong Reservoir, Turbidity

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Distribution of functional microorganisms and its significance for iron, sulphur, and nitrogen cycles in reservoir sediments

et al. 2021

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Sedimentation assessment and effects in Venda Nova dam reservoir (Portugal)

Cited by 8 publications

References 5 publications

Impact of flow on the deposition and sediment trapping capacity in a West African reservoir (case of the Lobo River reservoir, west-central of Côte d’Ivoire)

Impact of flow on the deposition and sediment trapping capacity in a West African reservoir (case of the Lobo River reservoir, west-central of Côte d’Ivoire)

The Management of Pusong Reservoir, Lhokseumawe City, Based on the Suspended Sediment Discharge

Distribution of functional microorganisms and its significance for iron, sulphur, and nitrogen cycles in reservoir sediments

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