This paper deals with history of flood prevention works in Kaga province from feudal period. There have been big and rapid rivers in Toyama plain in Kaga province. Since the life of the people lived there was significantly influenced by flood, the lordconstructed embankments and preserved forests. Firstly, this forest control system was discussed from the flood control point of view.
Then restriction of cutting bamboo and importation of it from other province were described as a policy of flood control. It is because that bamboo cylinders which were made of stones and bamboo, were the most important materials of river embankments for the flood control. Finally it was clarified that the policies mentioned above were quite successful for prevention of flood.
