The remedy for the West River is that the shallow part just at its junction with the sea between Wangkum and Sanchoo Islands should be trained by walls on both sides--a long one on the left, and a short one on the right--so as to concentrate the current to cut the river bed here to a depth of twenty feet or more. In this way, a uniform depth is secured, for after passing the Moto Entrance the West River has an average depth of 20 to 30 feet right along its whole course through this delta. With a uniform depth all the way to the sea, the undercurrent will run quickly and drain off the flood water more rapidly. Besides the deepening process, both shores should be regulated so as to give a uniform width to the channel. Midstream shoals and islands should be removed. The East River Valley does not suffer so severely from floods as those of the other two rivers, the West and the North, and its remedy will be provided in the regulation of the river for navigation. This will be dealt with in that connection. [Illustration: MAP XV] Second, the problem of navigation in the Canton Delta in connection with the three rivers. In dealing with this question we commence with the West River. In former days the traffic between the West River Valley and Canton always passed through Fatshan and Samshui, a distance of about 35 miles. But since the silting up of the Fatshan Channel below Sainam, the traffic has to take a great detour by descending the Pearl River southeastward as far as Fumen, then turn northwest into the Shawan Channel, then southeast into the Tamchow Channel, and then west into the Tailiang Channel and south into the Junction Channel and Maning Reach. Here it enters into the West River and runs a northwesterly direction up to Samshui Junction on this river. The whole journey covers a distance of about 95 miles, which compared with the old route is longer by 60 miles. The traffic between Canton and the West River Valley is very great. At present there are many thousands of steam launches plying between Canton City and the outlying districts, and more than half of that number are carrying traffic to and fro on the West River. Every boat has to run 95 miles on each trip whereas if the channel between Samshui and Canton is improved, the distance would be only 35 miles. What a great saving it will be! [Illustration: MAP XVI] In our project to improve the Canton Approach and Harbor, I suggested the draining of a deep channel from the sea to Whampoa and from Whampoa to Tamchow Channel. We now have to prolong this channel from its Tamchow Junction up to Samshui Junction on the West River. This Channel should be made at least 20 feet deep so as to join the deeper water of the West River above the Samshui Junction. And the same depth should be maintained in the North River itself some distance above Samshui, so as to give facility for the navigation of larger vessels up the river when the whole waterway is improved.