Long-term monitoring (1960–2008) of the river-sediment transport in the Red River Watershed (Vietnam): Temporal variability and dam-reservoir impact

Dang, Thi Ha; Coynel, Alexandra; Orange, Didier; Blanc, Guillaume; Etcheber, Henri; Lé, Lan Anh

doi:10.1016/j.scitotenv.2010.07.007

Cited by 140 publications

(128 citation statements)

References 62 publications

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“…At 160 × 10 6 t yr −1 , the Red River was ranked as the ninth river in terms of sediment flux by Milliman and Meade (1983). The Da River was its main sediment provider until the building of the HBD in the 1980s (Dang et al, 2010). Recent studies have shown that the sediment flux drastically decreased to around 40 × 10 6 t yr −1 during the 1997-2004 period following HBD impoundment (Le et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have shown that the sediment flux drastically decreased to around 40 × 10 6 t yr −1 during the 1997-2004 period following HBD impoundment (Le et al, 2007). The mean annual sediment trapping efficiency of the Hoa Binh reservoir was estimated to be 88 %, suggesting that the HBD reduces annual sediment delivery to the delta by half (Dang et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Impact of the Hoa Binh dam (Vietnam) on water and sediment budgets in the Red River basin and delta

Vinh¹,

Ouillon

Thạnh³

et al. 2014

Hydrol. Earth Syst. Sci.

109

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Abstract. The Hoa Binh dam (HBD), located on a tributary of the Red River in Vietnam, has a capacity of 9.45 × 10 9 m 3 and was commissioned in December 1988. Although it is important for flood prevention, electricity production and irrigation in northern Vietnam, the Hoa Binh dam has also highly influenced the suspended sediment distribution in the lower Red River basin, in the delta and in the coastal zone. Its impact was analysed from a 50-year data set of water discharge and suspended sediment concentration , and the distribution of water and sediment across the nine mouths of the delta was simulated using the MIKE11 numerical model before and after the dam settlement. Although water discharge at the delta inlet decreased by only 9 %, the yearly suspended sediment flux dropped, on average, by 61 % at Son Tay near Hanoi (from 119 to 46 × 10 6 t yr −1 ). Along the coast, reduced sedimentation rates are coincident with the lower sediment delivery observed since the impoundment of the Hoa Binh dam. Water regulation has led to decreased water discharge in the wet season (−14 % in the Red River at Son Tay) and increased water discharge in the dry season (+12 % at the same station). The ratios of water and suspended sediment flows, as compared to the total flows in the nine mouths, increased in the northern and southern estuaries and decreased in the central, main Ba Lat mouth. The increasing volume of dredged sediments in the Haiphong harbour is evidence of the silting up of the northern estuary of Cam-Bach Dang. The effect of tidal pumping on enhanced flow occurring in the dry season and resulting from changed water regulation is discussed as a possible cause of the enhanced siltation of the estuary after Hoa Binh dam impoundment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of the Hoa Binh dam (Vietnam) on water and sediment budgets in the Red River basin and delta

Vinh¹,

Ouillon

Thạnh³

et al. 2014

Hydrol. Earth Syst. Sci.

109

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“…Anthropogenic impacts on fluvial yield have become a global concern, and sediment mining and damming of rivers have been identified as significant impacts. Recent examples of related international research include Liquete et al (2009);Huang (2011); Dai et al (2008); Dang et al (2010).…”

Section: Introductionmentioning

confidence: 99%

Decadal trends in beach morphology on the east coast of South Africa and likely causative factors

Corbella

Stretch

2012

Nat. Hazards Earth Syst. Sci.

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Abstract. Sandy shorelines are dynamic with constant changes that can cause hazards in developed areas. The causes of change may be either natural or anthropogenic. This paper evaluates evidence for shoreline changes and their causative factors using a case study on the east coast of South Africa. Beach morphology trends were found to be locationspecific, but overall the beaches show a receding trend. It was hypothesized that wave, tide, sea level and wind trends as well as anthropogenic influences are causative factors, and their contributions to shoreline changes were evaluated. Maximum significant wave heights, average wave direction, peak period and storm event frequencies all show weak increasing trends, but only the increases in peak period and wave direction are statistically significant. The chronic beach erosion cannot be attributed to wave climate changes since they are still too small to explain the observations. Instead, the impacts of sea level rise and reductions in the supply of beach sediments are suggested as the main causative factors. The analysis also identifies a trend in the frequency of severe erosion events due to storms that coincide with a 4.5-yr extreme tide cycle, which demonstrates the potential impact of future sea level rise.

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“…As for the sediment load, Ren et al [22] analyzed annual sediment load of different periods in Yuan Jiang in the Red River Basin, and showed that annual sediment load in the 1980s was less than in the 1990s, and forest cover had a reverse relationship with sediment load. Dang et al [23] detected a significant decrease of sediment load after 1990 in the downstream of reservoir, which indicated that the Hoa Binh dam reduced its annual sediment by half. Wang et al [4] concluded that human activities such as dams or land use changes are the main causes affecting the changes of sediment flow in Red River Basin.…”

Section: Study Areamentioning

confidence: 99%

“…Other human disturbances such as agricultural irrigation water use, urban water consumption and especially dam construction have also likely affected streamflow and sediment load [23,50].…”

Section: Changes Of Land Cover Changes and Their Impactsmentioning

confidence: 99%

Attribution Analyses of Impacts of Environmental Changes on Streamflow and Sediment Load in a Mountainous Basin, Vietnam

Wang

Ishidaira

Ning

et al. 2016

Forests

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Located in the southeastern China and northern Vietnam, the Red River is an important international trans-boundary river that has experienced rapid deforestation and environmental changes over the past decades. We conducted attribution analysis of impacts of various environmental changes on streamflow and sediment load. The contribution of reclassified environmental changes to total change of the streamflow and sediment load was separated. Land cover change based on climate-induced and human-induced indicators were defined. We found that human-induced land cover change was the main factor affecting changes of the streamflow and sediment load. Changes of the land cover were more pronounced in the dry season than in the wet season whereas sediment load changed more in the wet season than in the dry season. In addition, changes in sediment load were mainly caused by human-induced land cover change and the changes of land cover were more influential on sediment load than on streamflow in the Red River basin.

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Long-term monitoring (1960–2008) of the river-sediment transport in the Red River Watershed (Vietnam): Temporal variability and dam-reservoir impact

Cited by 140 publications

References 62 publications

Impact of the Hoa Binh dam (Vietnam) on water and sediment budgets in the Red River basin and delta

Impact of the Hoa Binh dam (Vietnam) on water and sediment budgets in the Red River basin and delta

Decadal trends in beach morphology on the east coast of South Africa and likely causative factors

Attribution Analyses of Impacts of Environmental Changes on Streamflow and Sediment Load in a Mountainous Basin, Vietnam

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