2006/1 PAGES 10 – 18 RECEIVED 18. 2. 2006 ACCEPTED 15. 4. 2006 S. KOHNOVÁ, L. GAÁL, J. SZOLGAY, Associate Prof. Silvia Kohnová, PhD. Prof. Ján Szolgay, PhD. Associate Prof. Kamila Hlavčová, PhD. K. HLAVČOVÁ Department of Land and Water Resources Management Faculty of Civil Engineering, SUT Bratislava Radlinského 11, 813 68 Bratislava REGIONAL ESTIMATION Tel: 02/59274623,02/5974499 E-mail:
[email protected] [email protected] OF DESIGN 10-DAY
[email protected] Mgr. Ladislav Gaál PRECIPITATION TOTALS IN Czek Hydrometeorological Institute Libuš Na Šabatce 17 THE UPPER HRON REGION 143 06 Praha 4 – Komořany, ČR
[email protected] ABSTRACT KEY WORDS In the paper 10-day maximum precipitation totals from 23 rain gauges from the period • extreme precipitation, 1961 to 2000 in the upper Hron River basin in Slovakia were analysed. A combined • L-moments, method, based on statistical criteria and on the evaluation of evaporation and runoff • regional frequency analysis, conditions during long precipitation events, has been used for the selection of the 10- • 10-day maximum precipitation totals. day precipitation totals. N-year values of the 10-day annual maximum precipitation totals were estimated separately in the summer and winter seasons using a methodology developed by Hosking and Wallis (1997). The regional distribution function was selected using a L-moments diagram. Finally, a comparison of the resulting N-year maximum precipitation totals estimated from these regional distributions with the at–site analyses was performed. INTRODUCTION or heavy rainstorms. In Great Britain, the Flood Studies Report (NERC, 1975) and subsequently the Flood Estimation Handbook An essential part of flood risk assessment in engineering hydrology (FEH, 1999) were broad studies lasting for decades on the methods is the issue of intensive and long-lasting precipitation events.