To provide a supervising device for river pump plants which makes it possible to perform real time centralized supervision, rapid countermeasure at the time of the occurrence of a failure, daily log management operation efficiently by collecting information on the operation, equipment state, failure alarm, etc., of pump plants through a telephone line and showing the information of a supporting function screen that is the same as an operation supporting device of each plant in a maintenance facility which is separated from plural pump plants, which are distributed in a river basin, prescribed distances.

In a maintenance facility located in a remote place from river pump plants, the remote supervising means 900 supports centralized supervision and maintenance operation such as acquiring information on the operation, equipment state, failure alarm, etc., of each plant on a supporting function screen that is the same as operation supporting devices 500 of pump plants in real time, outputting a slip about operation record of each pump plant in the maintenance facility, etc.