Yangtze at Hukow. The sides of the deep channels should be lined with submerged stone ridges as high as the shallow part of the lake, whereby the channels would serve the purpose of draining as well as of navigation.
The shallow space beside those channels will be reclaimed into arable land in due time. So the work of regulating the Poyang channels will be well paid by reclamation.
e. The Han River
This river is navigable for small crafts through its main body up to Hanchung in the southwest corner of Shensi; and through its branches up to Nanyang and Shekichen in the southwest corner of Honan. This navigable stream commands quite a large area of watershed. The upper part, that is above Siangyang, is in mountainous country. From Siangyang to Shayang it is in a wide, open valley and below Shayang it runs into the Hupeh swamp.
To improve this river dams should be built above Siangyang in order to utilize water power as well as to make locks for larger crafts to ascend to the navigable point now navigable only for small crafts. Below Siangyang, where the river is very wide and shallow, rudimental dikes should be constructed of stones or piles in order to restrict its channel and to reclaim the shallow space on both sides by natural process. In the swamp, the river should be straightened and deepened. A new canal between the Han and the Yangtze at
