Effects of Dam Construction in the Wang River on Sediment Regimes in the Chao Phraya River Basin

Charoenlerkthawin, Warit; Namsai, Matharit; Bidorn, Komkrit; Rukvichai, Chaipant; Panneerselvam, Balamurugan; Bidorn, Butsawan

doi:10.3390/w13162146

Cited by 18 publications

(33 citation statements)

References 65 publications

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“…Moreover, the dam caused only about a 5% reduction of sediment supply from the Ping River to the CPY River system (Namsai et al, 2021). Charoenlerkthawin et al (2021) reported that the construction of three large dams in the Wang River system (Figure S4a) also did not cause a significant change in sediment load supply to the CPY River. The observed sediment loads downstream of the dams increased significantly due to additional sediment sources downstream of each dam.…”

Section: Shoreline Recession Has Also Reduced Noticeably Since 2002mentioning

confidence: 99%

Seven decades of shoreline changes along a muddy mangrove coastline of the Upper Gulf of Thailand

Sok

Bidorn

Burnett

et al. 2022

Earth Surf Processes Landf

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This study evaluates the historical coastal change and development along the eastern coastline of the Upper Gulf of Thailand between 1953 and 2019 based on a series of aerial photographs and satellite images. Long-term ($70 years) and short-term ($10 years) shoreline movement rates were analysed using the Digital Shoreline Analysis System (DSAS). Results of this analysis indicate that the shoreline along the western coast (WBK) of the Bang Pakong River mouth has undergone severe coastal degradation, with a land loss of about 980 ha over the last seven decades. Meanwhile, the eastern coastline (EBK) has developed continuously over this time span, resulting in a land growth of about 552 ha. Based on historical shorelines recorded since 1954, the shoreline recession along the WBK coast accelerated over five decades. The average shoreline change rate reached approximately À9 m/year in 2002 and is shown to be related to land subsidence, which was due to groundwater

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Section: Shoreline Recession Has Also Reduced Noticeably Since 2002mentioning

confidence: 99%

Seven decades of shoreline changes along a muddy mangrove coastline of the Upper Gulf of Thailand

Sok

Bidorn

Burnett

et al. 2022

Earth Surf Processes Landf

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“…The high rate of land subsidence (13-150 mm/y) due to overuse of groundwater has been reported as a major factor responsible for critical shoreline retreat in the CPD [12,13]. The construction of large dams in the Chao Phraya River system did not reduce the riverine sediment supply to the CPD [23][24][25][26]. Various hard/grey solutions have been applied along the WCPD and ECPD coasts to protect these major commercial and economic areas over the last 30 years [11].…”

Section: Study Areamentioning

confidence: 99%

Monitoring of nature-based solution for stabilizing eroded muddy coastline of the Chao Phraya Delta, Thailand

Charoenlerkthawin,

Bidorn,

Panneerselvam

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The Chao Phraya Delta (CPD), Thailand’s largest delta and low-lying muddy coast, has experienced shoreline recession for over six decades due to relative sea-level rise. A nature-based solution, bamboo fences, widely used in low-lying tropical areas, have been intensely applied along the CPD coastline during the last two decades. This study evaluated the effectiveness of bamboo fences in protecting eroded CPD coastlines using remote sensing data (aerial photographs, satellite imagery, and LiDAR observation data). Results from this study indicate that the effectiveness of bamboo fences in trapping sediment decreased over time due to the deterioration of bamboo, which generally deteriorates within four years. Additionally, the installation of multiple layers of bamboo fences did not directly increase the effectiveness of the structure in stabilizing the CPD coastline. It was also found that the mangrove shoreline can be successfully regenerated in the CPD coast where the seabed is higher than 0.5 m amsl. Because of the short life of the bamboo fences, the bamboo fence may not be the best solution for coastal protection and sustainable coastal management in a low-lying area with a high rate of shoreline recession and a low rate of sedimentation.

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“…The Chao Phraya Delta (CPD), the largest delta and low-lying muddy coast in Thailand, has experienced shoreline recession for over six decades due to relative sea-level rise [24][25][26][27][28][29] . With an average shoreline retreat rate during 1996-2002 of more than − 16 m/y, the CPD has become one of the world's shoreline retreat hot spots 30 .…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of grey and green engineered solutions for protecting the low-lying muddy coast of the Chao Phraya Delta, Thailand

Charoenlerkthawin

Bidorn

Burnett

et al. 2022

Preprint

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Coastal protection measures can be categorized into grey and green solutions in terms of their ecosystem impacts. As the use of grey solutions has become a serious issue due to environmental consequences during the last few decades, green/nature-based solutions have become prioritized. This study evaluates the effectiveness of grey and green solutions applied along the eastern Chao Phraya Delta (ECPD) based on historical shoreline change analysis and coastal observations using Light Detection and Ranging (LiDAR) technology. The results from shoreline analysis indicate that nearshore breakwaters installed 100–250 m from the shoreline have successfully reclaimed the coastline with a sedimentation rate of 17–23 cm/y. Meanwhile, sand-sausage-submerged breakwaters were ineffective at stabilizing the coastline during 2002–2010 due to land subsidence. With a low subsidence rate, the rubble-mound-submerged breakwaters can reduce the shoreline retreat rate with a vertical deposition rate of about 5 cm/y. In contrast, use of a bamboo fence, a green solution widely used along muddy coasts, traps sediment at a rate of less than 1.3 cm/y and typically lasts only for 2–3 years after installation. Decomposed bamboo causes environmental degradation so local communities disapprove of the approach. Results reveal that grey solutions are more effective for stabilizing the ECPD coastline and result in less coastal environmental impact than the nature-based solution using a bamboo fence.

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Effects of Dam Construction in the Wang River on Sediment Regimes in the Chao Phraya River Basin

Cited by 18 publications

References 65 publications

Seven decades of shoreline changes along a muddy mangrove coastline of the Upper Gulf of Thailand

Seven decades of shoreline changes along a muddy mangrove coastline of the Upper Gulf of Thailand

Monitoring of nature-based solution for stabilizing eroded muddy coastline of the Chao Phraya Delta, Thailand

Effectiveness of grey and green engineered solutions for protecting the low-lying muddy coast of the Chao Phraya Delta, Thailand

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