• the dolphins' distribution in the dry season is thought to be restricted to the upper reaches of the Cambodian Mekong from Kratie to the Lao/Cambodian border (including Chiteal pool which lies on the Lao/Cambodian border).

• during the wet season, dolphins distribute throughout the Mekong River, south to at least Phnom Penh and probably into Vietnam, and up into major river systems (such as the Sekong and Sesan).

• the presence of Khone Falls (5 km north from the Lao/Cambodian border) prevents any further movement north of the population.

• During the early 1970’s, Irrawaddy dolphins were regularly recorded in Tonle Sap Great Lake. It is believed that due to direct hunting in the mid 1970’s and intensive fishing pressure, dolphins are no longer found in significant numbers (if at all) in Tonle Sap Great Lake.

IMPORTANT HABITATS

• Kampi pool is one of the most important areas for the survival of the dolphins in the Mekong River.