Abstract
This paper focuses on the dumping of garbage and patrols to prevent it at irrigation ponds. To clarify the effects and problems, we conducted questionnaire surveys; respondents were the local managers of ponds in Kyoto Prefecture. The main conclusions are as follow: (1) Principal conditions that decrease the dumping of garbage by patrols arc distance from residential quarter, coordinator, use for relaxation, and so on; (2) The problems of patrols are troubles with fishermen, complaints about effects and burdens. Finally we made the suggestion for patrols from now on.
