Impact of Dike Construction on Flood Dynamics and Agriculture in Vietnam's Mekong Delta

Dikes are not native to the Mekong Delta in Vietnam. Historically, this region functioned as a natural depression, absorbing floodwaters from the Mekong during the rainy season and releasing them during the dry season. The construction of dikes to contain floodwaters has enabled the cultivation of a third rice crop annually, thereby increasing the yearly rice yield. However, this comes at a cost. Building dikes in the upper delta to produce a third rice crop has unintended consequences downstream. The dikes force the floodwaters into narrower channels, increasing their speed and causing greater erosion and flooding damage in the middle and lower delta, extending all the way to the sea.

In following figure, comparison of peak river water levels at stations along the Hau River resulting from different flood years (Duc Tran et al, 2018)

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Hệ thống lấy nước biển xa bờ của Minh Phú tại Lộc An - Vũng Tàu

 

DỰ ÁN HỆ THỐNG TRẠM BƠM CẤP NƯỚC BIỂN XA BỜ 4500M ĐẢM BẢO ĐỘ MẶN VÀ CHẤT LƯỢNG NƯỚC PHỤC VỤ NUÔI TRỒNG THỦY SẢN MINH PHÚ - LỘC AN

·         Tiếng Anh: https://youtu.be/08ZsCfVPLtI

·         Tiếng Hàn: https://youtu.be/s1cUSBGAv1E

·         Tiếng Hoa: https://youtu.be/OvJMNxQ2DM8

·         Tiếng Nhật: https://youtu.be/LmEEa7VCgnw

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TECHNICAL STANDARDS AND COMMENTARIES, OCDI (2009)

TECHNICAL STANDARDS AND COMMENTARIES FOR PORT AND HARBOUR FACILITIES IN JAPAN
-　Contents　-		Hardcover in A4 size, 1028 pages 52,000yen (shipping included) >Purchase of publications

a	Cover    Foreword    Acknowledgement    Abbreviations    Symbols    Contents		a_xxvii680KB
001 003 039	Part I General     Chapter 1 General Rules     Chapter 2 Construction, Improvement, or Maintenance of Facilities Subject to the Technical Standards		001_0521,494KB
053 055 057 207 235 271 282 288 289 311 312 325	Part II Actions and Material Strength Requirements     Chapter 1 General     Chapter 2 Meteorology and Oceanography     Chapter 3 Geotechnical Conditions     Chapter 4 Earthquakes     Chapter 5 Earth Pressure and Water Pressure     Chapter 6 Ground Liquefaction     Chapter 7 Ground Subsidence     Chapter 8 Ships     Chapter 9 Environmental Actions     Chapter 10 Self Weight and Surcharge     Chapter 11 Materials		053_056548KB 057_1082,580KB 109_1712,310KB 172_2061,498KB 207_2341,299KB 235_2702,034KB 271_3111,815KB 312_3601,715KB
361 363 364 552 583 676 913 941 958 961 963	Part III FACILITIES     Chapter 1 General     Chapter 2 Items Common to Facilities Subject   　to Technical Standards     Chapter 3 Waterways and Basins     Chapter 4 Protective Facilities for Harbors     Chapter 5 Mooring Facilities     Chapter 6 Port Transportation Facilities     Chapter 7 Cargo Sorting Facilities     Chapter 8 Storage Facilities     Chapter 9 Facilities for Ship Service     Chapter 10 Other Port Facilities		361_363434KB 364_4091,805KB 410_4652,955KB 466_5172,453KB 518_5511,897KB 552_5821,536KB 583_6342,025KB 635_6751,317KB 676_7241,978KB 725_7661,836KB 767_8162,129KB 817_8641,706KB 865_9121,654KB 913_9801,526KB
981	INDEX		981_1,094KB

(OCDI)

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