The history of documented local reductions in fish catches on
the Pak Mun, Sesan and Nam Theun and Hinboun river tributaries
of the Mekong vary from 30% to 90% – generally falling at the more
severe end of this range following the completion of dams (ADB,
2001; Baird and Mean, 2005; The Theun-Hinboun Power Company
Limited, 2000). In this context, the estimates of loss of fish
production in the Mekong Basin in 2030 compared to a 2000
baseline, due to dam development by the SEA (Table 1)
appears conservative. The assessment concludes that basin-wide