The cultivation of the vast lowland area of Southern Indochina is the main objective of this project. Take advantage of the waters of the northern half of the subcontinent, mountainous and heavy rains, to irrigate its southern half. The key to the project is the regularization of the waters of the Mekong, a river that has a flow of 13,000 meters 3 / second at the mouth. For that it would be necessary to build two large reservoirs. One at the exit of the river from the mountains, which retains the waters of the entire upper course. The most appropriate point seems to be immediately above Luang Prabang. With the waters retained here, the plains of East Thailand and the Menam Valley could be irrigated. A second reservoir at the exit of the river to the coastal plain, in the region of the falls, to regularize the lower course and irrigate Cambodia and Cochin China,

Complementary to the Mekong project are those of Iravadi and the Red River of Tonkin, Cambodia and Cochin China. The same work is necessary in the Tonkin and Annam rivers. But there is a very special project in this region, around the use of the Saluen River.