The Original Erosion-Control Dams (Sunadome) in Mt. Kinugasa (Mt. Kannonzi) in old Ohomi District and the Policy at that time for the Control of Debris Flow

Abstract

This treatise is a report for the recorded original erosion-control dams, which are called the Sunadome in Mt. Kinugasa or Mt. kannonzi in Shiga Prefecture (Ohomi district). They are considerd as the most old ones in existing Sunadome in Japan. We state the present condition about them, then the point of view of government to the control to debris flow to the towns around the Kannonzi castle.