Assessment of Flow Changes from Hydropower Development and Operations in Sekong, Sesan, and Srepok Rivers of the Mekong Basin

摘要: AbstractThe Mekong River supports unique biodiversity and provides food security for over 60 million people in the Indo-Burma region, yet potential changes to natural flow patterns from hydropower development are a major risk well-being of this system. Of particular concern is ongoing future 42 dams transboundary Srepok, Sesan Sekong (3S) basin, which contributes up 20% Mekong’s annual flows critical ecosystem services downstream Tonle Sap Lake Delta. To assess magnitude changes, daily were simulated 20 years using HEC ResSim SWAT models range dam operations scenarios. A 63% increase dry season 22% decrease wet at outlet 3S basin could result new main rivers under an operation scheme maximize electricity production. Water-level sce...