Flood Prevention Management Information System for Qingdao City's Daguhe River Basin

Abstract

With the increasing use of information technology in hydraulic engineering and the proposal of digital hydrology and watershed,hydro-information gradually turns into a main development trend in hydraulic engineering.The information and data,which are transferred and calculated in the digital hydrology and watershed system,could be collected,stored,extracted and transacted for the advantage of more accurate simulation of hydrologic and hydrodynamic process.Therefore,the system should play an important role in engineering design,flood control,disaster mitigation and water resource allocation.The floods in Qindao city's Daguhe River Basin always come fiercely with high flood tides and large flow rates,and may rise and fall suddenly and sharply.A flood management information system for the basin was developed to forecast the floods and supply the inquiry information for the flood prevention administration.Supported by MAPX GIS tools,databases and numerical simulations,the system stores all kinds of integrated information.Also the system uses the 1-dimensional and 2-dimensional numerical models for flood calculation and shows the results in a visual and brief way.The database design not only meets the demands of system development,but also makes connection to the existing Precipitation and Flow Automatic Inspection System in Daguhe River Basin.Accordingly,the integrality and veracity of data is in security.1-dimensional and 2-dimensional numerical models are integrated in the system,which calculates and forecasts elevation and velocity of flow in the main channel of Daguhe River in flood season and the flooded area out of levees if bank-break occurred.It is proved that the system has the advantage of very good practicability with friendly interface,complete functions and perfect performance.