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This study aims to quantify how hydropower development in the Sesan, Srepok, and Sekong (3S) rivers, together with definite future (DF) plans for infrastructure development, would alter the hydrology of Cambodia’s Tonle Sap's Floodplain. Researchers coupled results from four numerical models representing the basin's surface hydrology, water resources development, and floodplain hydrodynamics. The scale of alterations caused by hydropower in the 3S was compared with the basin's DF scenario driven by the Upper Mekong dam cascade. The study found that the DF or 3S development scenarios could independently increase Tonle Sap's 30-day minimum water levels by 30 ± 5 cm and decrease annual water level fall rates by 0.30 ± 0.05 cm day−1. When analyzed together (DF + 3S), these scenarios are likely to eliminate all baseline conditions (1986–2000) of extreme low water levels, a particularly important component of Tonle Sap's environmental flows.

Data Resources (1)

Data Resource Preview - Dams on Mekong tributaries as significant contributors of hydrological alterations to the Tonle Sap Floodplain in Cambodia

Additional Info

Field Value
Document type Reports, journal articles, and research papers (including theses and dissertations)
Language of document
  • English
  • Environment and natural resources
  • Environmental impact assessments
  • Floods
  • Water resources
Geographic area (spatial range)
  • Cambodia
  • Viet Nam
  • Lao People's Democratic Republic
  • Thailand
Copyright Yes
Access and use constraints

CC Attribution 3.0 License.

Version / Edition 1.0
License CC-BY-4.0

T. A. Cochrane (

Author (individual) Arias, M. E
Co-author (individual) Piman,T.; Lauri,H.; Cochrane, T. A.; Kummu, M.
Publisher Copernicus Publications on behalf of the European Geosciences Union
Publication date 2014
Pagination 12 p.
General note

Hydrology and Earth System Sciences, Volume 18, 5303-5315

Date uploaded June 2, 2015, 05:20 (UTC)
Date modified June 24, 2015, 03:40 (UTC)