The Sava River is the second largest tributary to the Danube River and is of biological significance due to its outstanding biological and landscape diversity. It hosts the largest complex of alluvial floodplain wetlands in the Danube basin and the largest lowland forests. The Sava is a unique example of a river where the floodplains are still intact, supporting both flood alleviation and biodiversity.
Two priority basins for hydro-meteorological data collection and early warning system development: The Sebangfai and the Sebanghieng River Basins. These two basins are among the most flood affected river basins in Lao PDR.