Abstract
In the designated district to the Matsumoto Sabo Construction Work Office, Ministry of Construction, there are many mountain streams having been troubled by the rucky mudflow damages.
To investigate the cause of the rocky mudflow, many experiments together with the actual prevention works for the rocky mudflow have been done by the members belonged to this office.
This report introduces briefly the general view of the organization and methods on the rucky mudflow investigation in our office.
