The collection of hydrological data using General Packer Radio Service（GPRS） technology is one the communication approaches chosen by hydrological departments.This paper describes the composition of GPRSbased hydrological data collection system

analyses the principle of data transmission between workstations and concentrators/collectors

introduces the design methodology of the application software used in workstations of the monitoring center

and gives the design diagram of the main interface of the workstation application software.