Articles | Volume 26, issue 3
https://doi.org/10.5194/hess-26-609-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/hess-26-609-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Feb 2022
Research article |
| 07 Feb 2022
| 07 Feb 2022
Drastic decline of flood pulse in the Cambodian floodplains (Mekong River and Tonle Sap system)
Samuel De Xun Chua
CORRESPONDING AUTHOR
Department of Geography, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore
Xi Xi Lu
Department of Geography, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore
Chantha Oeurng
Faculty of Hydrology and Water Resources Engineering, Institute of
Technology of Cambodia, Russian Federation Blvd., P.O. Box 86, Phnom Penh,
Cambodia
Ty Sok
Faculty of Hydrology and Water Resources Engineering, Institute of
Technology of Cambodia, Russian Federation Blvd., P.O. Box 86, Phnom Penh,
Cambodia
Laboratoire Ecologie fonctionnelle et environnement, Université de Toulouse, CNRS, Toulouse INP, Université Toulouse 3 – Paul Sabatier
(UT3), Toulouse, France
Carl Grundy-Warr
Department of Geography, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore
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Cited
34 citations as recorded by crossref.
- Evaluating the Economic Efficiency of Crop Production in the Floodplain During the Dry Season in Chulkiri District, Kampong Chhnang Province M. Chea et al.
- What can stage curves tell us about water level changes? Case study of the Lower Mekong Basin S. Chua & X. Lu
- Decoding Cropland Drought Dynamics: Insights from Sentinel-1 SAR Observations in the Lower Mekong River Basin N. Son et al.
- High Precision Altimetry Using Spaceborne Grazing Angle GNSS-Reflectometry Over Tonlé Sap Lake M. Scott et al.
- Severe decline in extent and seasonality of the Mekong plume after 2000 Y. Feng et al.
- Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake W. Jiang et al.
- The changing rainfall patterns drive the growing flood occurrence in Phnom Penh, Cambodia W. Huang et al.
- Regional contributions of climate change and human activities to altered flow of the Lancang-mekong river K. Zhang et al.
- Sediment Load Crisis in the Mekong River Basin: Severe Reductions Over the Decades S. Chua & X. Lu
- Southeast Asia's dynamic sand trade and the need for better data K. Yuen et al.
- Sand-mining-driven reduction in Tonle Sap Lake’s critical flood pulse L. Quan et al.
- Land cover change and its response to water level around Tonle Sap Lake in 1988–2020 J. Zhang et al.
- Innovating community fish refuges in Tonle Sap Lake for enhancing resilience to climate change and the altered hydrological regime of the Mekong River M. Sithirith et al.
- Better plans are needed for mitigating the ecological impacts of Cambodia's Funan Techo Canal H. Yang et al.
- Population genetics of Macrognathus siamensis (Synbranchiformes: Mastacembelidae): Implications for non-migratory fishery resources in the Mekong River basin O. Truong et al.
- Fishery and agriculture amidst human activities and climate change in the Mekong River: A review of gaps in data and effective approaches towards sustainable development K. Morovati et al.
- On the cause of large daily river flow fluctuations in the Mekong River K. Morovati et al.
- Evolution of river regimes in the Mekong River basin over 8 decades and the role of dams in recent hydrological extremes H. Dang & Y. Pokhrel
- Is it worth it? Land-fallowing and saltwater intrusion control under uncertainty D. Tran et al.
- Sediment load crisis in the Mekong River Basin: Severe reductions over the decades S. Chua & X. Lu
- Conservation for sustaining livelihoods: Adaptive co-management of fish no-take zones in the Mekong River Y. Kura et al.
- Water Governance in the Cambodian Mekong Delta: The Nexus of Farmer Water User Communities (FWUCs), Community Fisheries (CFis), and Community Fish Refuges (CFRs) in the Context of Climate Change M. Sithirith et al.
- Sea-Level Rise and Saltwater Intrusion: Economic Estimates of Impacts of Nature-Based Mitigation Policies Under Uncertainty D. Tran & K. Le
- From slow violence to ecological crisis and hard violence: the impacts of climate change and hydropower development in the Mekong River Basin on Tonle Sap Lake M. Sithirith
- One more way to address the seasonal water shortage of the largest freshwater lake in China? A nature-based solution through lake bathymetry restoration B. Li et al.
- Contribution of channel geometry adjustments to stage variance based on rating-curves in the main stream of the Lancang–Mekong river L. He et al.
- Sand mining in the Mekong Delta: Extent and compounded impacts E. Park
- The social flood pulse and socio‐ecological transformation of the Tonle Sap M. Sithirith & C. Grundy‐Warr
- Mechanistic Insights into Flood Pulse-Induced Ecological Benefits and a Balanced Eco-Risk Assessment Framework Y. Cai et al.
- A framework for analysing water security of Tonle Sap Lake in the Mekong River basin: Flow, volume, inundation, productivity and livelihoods M. Sithirith
- Analyzing Water-Based Livelihoods in the Mekong River Basin: A Livelihood Framework of the Tonle Sap M. Sithirith et al.
- The changing magnitude and timing of riverine floods in India S. Kuntla et al.
- Can restoring water and sediment fluxes across a mega-dam cascade alleviate a sinking river delta? S. Chua et al.
- Proglacial river sediment fluxes in the southeastern Tibetan Plateau: Mingyong Glacier in the Upper Mekong River X. Lu et al.
34 citations as recorded by crossref.
- Evaluating the Economic Efficiency of Crop Production in the Floodplain During the Dry Season in Chulkiri District, Kampong Chhnang Province M. Chea et al.
- What can stage curves tell us about water level changes? Case study of the Lower Mekong Basin S. Chua & X. Lu
- Decoding Cropland Drought Dynamics: Insights from Sentinel-1 SAR Observations in the Lower Mekong River Basin N. Son et al.
- High Precision Altimetry Using Spaceborne Grazing Angle GNSS-Reflectometry Over Tonlé Sap Lake M. Scott et al.
- Severe decline in extent and seasonality of the Mekong plume after 2000 Y. Feng et al.
- Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake W. Jiang et al.
- The changing rainfall patterns drive the growing flood occurrence in Phnom Penh, Cambodia W. Huang et al.
- Regional contributions of climate change and human activities to altered flow of the Lancang-mekong river K. Zhang et al.
- Sediment Load Crisis in the Mekong River Basin: Severe Reductions Over the Decades S. Chua & X. Lu
- Southeast Asia's dynamic sand trade and the need for better data K. Yuen et al.
- Sand-mining-driven reduction in Tonle Sap Lake’s critical flood pulse L. Quan et al.
- Land cover change and its response to water level around Tonle Sap Lake in 1988–2020 J. Zhang et al.
- Innovating community fish refuges in Tonle Sap Lake for enhancing resilience to climate change and the altered hydrological regime of the Mekong River M. Sithirith et al.
- Better plans are needed for mitigating the ecological impacts of Cambodia's Funan Techo Canal H. Yang et al.
- Population genetics of Macrognathus siamensis (Synbranchiformes: Mastacembelidae): Implications for non-migratory fishery resources in the Mekong River basin O. Truong et al.
- Fishery and agriculture amidst human activities and climate change in the Mekong River: A review of gaps in data and effective approaches towards sustainable development K. Morovati et al.
- On the cause of large daily river flow fluctuations in the Mekong River K. Morovati et al.
- Evolution of river regimes in the Mekong River basin over 8 decades and the role of dams in recent hydrological extremes H. Dang & Y. Pokhrel
- Is it worth it? Land-fallowing and saltwater intrusion control under uncertainty D. Tran et al.
- Sediment load crisis in the Mekong River Basin: Severe reductions over the decades S. Chua & X. Lu
- Conservation for sustaining livelihoods: Adaptive co-management of fish no-take zones in the Mekong River Y. Kura et al.
- Water Governance in the Cambodian Mekong Delta: The Nexus of Farmer Water User Communities (FWUCs), Community Fisheries (CFis), and Community Fish Refuges (CFRs) in the Context of Climate Change M. Sithirith et al.
- Sea-Level Rise and Saltwater Intrusion: Economic Estimates of Impacts of Nature-Based Mitigation Policies Under Uncertainty D. Tran & K. Le
- From slow violence to ecological crisis and hard violence: the impacts of climate change and hydropower development in the Mekong River Basin on Tonle Sap Lake M. Sithirith
- One more way to address the seasonal water shortage of the largest freshwater lake in China? A nature-based solution through lake bathymetry restoration B. Li et al.
- Contribution of channel geometry adjustments to stage variance based on rating-curves in the main stream of the Lancang–Mekong river L. He et al.
- Sand mining in the Mekong Delta: Extent and compounded impacts E. Park
- The social flood pulse and socio‐ecological transformation of the Tonle Sap M. Sithirith & C. Grundy‐Warr
- Mechanistic Insights into Flood Pulse-Induced Ecological Benefits and a Balanced Eco-Risk Assessment Framework Y. Cai et al.
- A framework for analysing water security of Tonle Sap Lake in the Mekong River basin: Flow, volume, inundation, productivity and livelihoods M. Sithirith
- Analyzing Water-Based Livelihoods in the Mekong River Basin: A Livelihood Framework of the Tonle Sap M. Sithirith et al.
- The changing magnitude and timing of riverine floods in India S. Kuntla et al.
- Can restoring water and sediment fluxes across a mega-dam cascade alleviate a sinking river delta? S. Chua et al.
- Proglacial river sediment fluxes in the southeastern Tibetan Plateau: Mingyong Glacier in the Upper Mekong River X. Lu et al.
Saved (final revised paper)
Latest update: 18 May 2026
Short summary
We found that the annual flood at the Cambodian floodplains decreased from 1960 to 2019. Consequently, the Tonle Sap Lake, the largest lake in Southeast Asia, is shrinking. The results are worrying because the local fisheries and planting calendar might be disrupted. This drastic decline of flooding extent is caused mostly by local factors, namely water withdrawal for irrigation and channel incision from sand mining activities.
We found that the annual flood at the Cambodian floodplains decreased from 1960 to 2019....
Special issue