The composition and characteristics of the automatic hydrological data telemetering and forecasting system for Dalong Water Control Project are introduced,and the important function of the system in the project is described as well.

Introduced in the paper is the construction of the automatic hydrological forecast system of the Hongmen Hydropower Plant,including the necessity of system upgrade and the design proposal,and the characteristics and routine maintenance of the reformed system.

The communication mode of the automatic hydrological forecast system of the Tianshengqiao Hydropower Station is a combined network, which is composed of Inmarsat-C satellite offered by the international organization for movable and VHF networks.

During the construction of Dalong Reservoir,the information of rainfall is collected by the automatic system of hydrological data acquisition and transmission with more duly prediction of flood;of which the prediction begins as soon as the end of the main strong rainfall and the multi-supplement is taken for the modification of the repeated peak ra.

The basic concept, principle and characteristics of the satellite communication-based automatic system of hydrological data acquisition and transmission and MQ Series are introduced briefly.

Fault treatment of automatic hydrological data acquisition and transmission system of Wan’an Hydropower Plant;

In combination with the past 10-year maintenance situation of the automatic hydrological data acquisition and transmission system of the Jinshuttan Hydropower Plant, the common faults of the system are classified according to different kinds of stations, such as telemetry station, relay station and central station.

From 2000 to the beginning of 2005, there were 1 central station, 7 division stations and 134 telemetering stations in the automatic hydrological data acquisition and transmission system in the Wujiang basin.