Real time weather radar data processing for urban hydrology in Nancy

A real time weather radar data processing system has been under development in Nancy since 1994. This evolutionary system is operational and radar dat a are used to improve the management of the sewer system of the urban commu nity in accordance with two objectives : protection against flooding and re duction of pollution overflows. The first part of this paper presents the r eal time processing carried out directly by the computer which receives rad ar data every five minutes. This processing includes verifying the radar me asurements by rain gauge data, identifying a type of rain event, forecastin g rainfall evolution, and producing alarm signals. The second part presents the way used to integrate radar data into the Centralised Technical Manage ment system of the sewer network, radar information being available using t he same tools as other types of hydrological data. (C) 1999 Elsevier Scienc e Ltd. All rights reserved.