QUALITY-CONTROL OF RAIN DATA USED FOR URBAN RUNOFF SYSTEMS

When improving software packages such as MOUSE and SAMBA for designing sewers and storage basins, and simulating overflows and flooding the quality of the input becomes important. The essential input to these m odelling tools are the historical rain series. This paper presents the procedures for collection and quality control of rain data from a net work of tipping bucket rain gauges in Denmark carried out by the Danis h Meteorological Institute. During rain, the RIMCO gauge counts the nu mber of tips teach of 0.2 mm of precipitation) every minute, The quali ty control of the rain data includes an automatic and a manual bit mar king, where the automatic control basically is pointing out minutes wi th extreme intensities. In the manual control, the maximum intensities as well as the daily totals of precipitation are inspected, using wea ther charts, intensity plots and precipitation sums of nearby Hellmann gauges. Shortcomings and improvements of the quality control are disc ussed. Although, it is possible to improve the efficiency of the quali ty control, long term corrections will always be necessary. (C) 1998 P ublished by Elsevier Science Ltd. All rights reserved.