Abstract
The lzu Bonin Islands are a group of volcanic islands that project into the Pacific Ocean from the Japanese Archipelago. On the islands, various methods to improve water resources that are peculiar to isolated islands, for example the use of water from mountain streams, have been developed since the modem age.
However, the actual conditions of water use development on the islands have never been thoroughly researched and compiled into a report.
This thesis deals with the characteristics of the adjustment of the shortage of water based on the examination into the history of water use development and the balance between water supply and demand on each of the islands.
