A modelling-based assessment of suspended sediment transport related to new damming in the Red River basin from 2000 to 2013

Xi, Wei; Sauvage, Sabine; Ouillon, Sylvain; Le, Thi Phuong Quynh; Orange, Didier; Herrmann, Marine; Sanchez-Perez, José-Miguel

doi:10.1016/j.catena.2020.104958

Cited by 22 publications

(25 citation statements)

References 59 publications

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“…The relatively higher water surface slopes in the middle reach passing through the Cuvette Centrale make this a real possibility. Sediment loads and yields are majorly influenced by land cover and land use, which alters upland erosion processes [96,100] (Wei et al, 2020;Sok et al, 2020). Rapid urbanization, hydroelectric dam construction and/or future water diversion schemes would also have a significant effect on the fluxes of material in the Cuvette Centrale.…”

Section: Discussionmentioning

confidence: 99%

“…The DEM resolution for computing the hillslope length also has implications for runoff and erosion computations. The Bagnold equation used to calculate the maximum amount of sediment transported in a stream segment has its limitations [96] (Wei et al, 2020). The algorithm does not differentiate between particle sizes and offers no distinction between channel and flood plain deposition [49] (Neitsch et al, 2011).…”

Section: Uncertainties Related To Sediment Estimationmentioning

confidence: 99%

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Sediment Balance Estimation of the ‘Cuvette Centrale’ of the Congo River Basin Using the SWAT Hydrological Model

Datok

Sauvage

Fabre

et al. 2021

Water

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In this study, the SWAT hydrological model was used to estimate the sediment yields in the principal drainage basins of the Congo River Basin. The model was run for the 2000–2012 period and calibrated using measured values obtained at the basins principal gauging station that controls 98% of the basin area. Sediment yield rates of 4.01, 5.91, 7.88 and 8.68 t km−2 yr−1 were estimated for the areas upstream of the Ubangi at Bangui, Sangha at Ouesso, Lualaba at Kisangani, and Kasai at Kuto-Moke, respectively—the first three of which supply the Cuvette Centrale. The loads contributed into the Cuvette Centrale by eight tributaries were estimated to be worth 0.04, 0.07, 0.09, 0.18, 0.94, 1.50, 1.60, and 26.98 × 106 t yr−1 from the Likouala Mossaka at Makoua, Likouala aux Herbes at Botouali, Kouyou at Linnegue, Alima at Tchikapika, Sangha at Ouesso, Ubangi at Mongoumba, Ruki at Bokuma and Congo at Mbandaka, respectively. The upper Congo supplies up to 85% of the fluxes in the Cuvette Centrale, with the Ubangi and the Ruki contributing approximately 5% each. The Cuvette Centrale acts like a big sink trapping up to 23 megatons of sediment produced upstream (75%) annually.

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Section: Discussionmentioning

confidence: 99%

Section: Uncertainties Related To Sediment Estimationmentioning

confidence: 99%

Sediment Balance Estimation of the ‘Cuvette Centrale’ of the Congo River Basin Using the SWAT Hydrological Model

Datok

Sauvage

Fabre

et al. 2021

Water

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“…The annual mean of sediment yield of Mekong River with other major rivers in Asia and continents. Note: The value from[23,58,[73][74][75][76].…”

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confidence: 99%

Assessment of Hydrology and Sediment Yield in the Mekong River Basin Using SWAT Model

Sok

Oeurng

Ich

et al. 2020

Water

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The Mekong River Basin (MRB) in Southeast Asia is among the world’s ten largest rivers, both in terms of its discharge and sediment load. The spatial and temporal resolution to accurately determine the sediment load/yield from tributaries and sub-basin that enters the Mekong mainstream still lacks from the large-scale model. In this study, the SWAT model was applied to the MRB to assess long-term basin hydrology and to quantify the sediment load and spatial sediment yield in the MRB. The model was calibrated and validated (1985–2016) at a monthly time step. The overall proportions of streamflow in the Mekong River were 34% from surface runoff, 21% from lateral flow, 45% from groundwater contribution. The average annual sediments yield presented 1295 t/km2/year in the upper part of the basin, 218 t/km2/year in the middle, 78 t/km2/year in the intensive agricultural area and 138 t/km2/year in the highland area in the lower part. The annual average sediment yield for the Mekong River was 310 t/km2/year from upper 80% of the total MRB before entering the delta. The derived sediment yield and a spatial soil erosion map can explicitly illustrate the identification and prioritization of the critical soil erosion-prone areas of the MR sub-basins.

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“…It is worth noting that further cascade dam-reservoirs are under construction or planned in the short-to medium-term in China, in the upper channel of the Red River system (Wei et al, 2021). Once completed, the sediment trapping e ciency could increase further, thereby exacerbating the decreases in the sediment load in the lower reaches of the system in Vietnam.…”

Section: Period 2016-2021mentioning

confidence: 99%

“…Worldwide, more than 58,000 large dam-reservoirs (height > 15 m) and approximately 2.8 million dams (with reservoir areas > 103 m 2 ) have been constructed to control oods and provide water supplies (Wang et al, 2021). Around 28% of the large dams are in Asia (Wei et al, 2021). During the construction and operation stages, dam-reservoir systems can have multiple environmental impacts, and can disturb ecosystems and the physical environment (Lu et al, 2015;Brandt, 2000).…”

Section: Introductionmentioning

confidence: 99%

Changes in the sediment load in the Red River system (Vietnam) from 1958- 2021 because of dam-reservoirs

Quang

Ngoc²,

Phong

et al. 2022

Preprint

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The sediment regime of the Red River system has changed since dams and reservoirs were implemented, with implications for river processes downstream. We analyzed data for the daily discharge (Q) and suspended particulate matter (SPM) concentrations collected from 1958–2021 at the Son Tay hydrological gauging station, the outlet of the Red River system and entry to the delta. The results showed that the annual sediment load transported by the Red River system decreased significantly, by about 90.4%, over the 64-year study period. From 1958 to 1971, when there were no dams or reservoirs in place, the annual water discharges and sediment loads in the river system were about 115,592×106 m3/yr and 115×106 ton/yr, respectively. From 1971 to 2016, a series of dam-reservoir systems were gradually implemented (Thac Ba (1971), Hoa Binh (1988), Tuyen Quang (2008), Son La (2010), Ban Chat (2013), Huoi Quang (2015), and Lai Chau (2016)). By 2016, the annual sediment load and water discharges in the Red River system had decreased significantly, and were 9×106 ton/yr and 88,709×106 m3/yr, respectively. The data show that the discharge and sediment loads increased slightly from 2016–2021, perhaps reflecting the combined effects of human activities, such as land-use change, deforestation, and population increases. Climate may also have played a role in these increases, with changes in air temperature and increases in rainfall triggering severe soil erosion and large discharges of sediment into the Red River system.

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A modelling-based assessment of suspended sediment transport related to new damming in the Red River basin from 2000 to 2013

Cited by 22 publications

References 59 publications

Sediment Balance Estimation of the ‘Cuvette Centrale’ of the Congo River Basin Using the SWAT Hydrological Model

Sediment Balance Estimation of the ‘Cuvette Centrale’ of the Congo River Basin Using the SWAT Hydrological Model

Assessment of Hydrology and Sediment Yield in the Mekong River Basin Using SWAT Model

Changes in the sediment load in the Red River system (Vietnam) from 1958- 2021 because of dam-reservoirs

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