DONATE

IAHR Document Library


« Back to Library Homepage « Proceedings of the 2nd Symposium on Flood Defence (Beijing, ...

Floods, New Design-Flood Criteria and Dam Refurbishment in Sweden

Author(s): James Yang; Patrik Andreasson; Malte Cederstrom

Linked Author(s): James Yang

Keywords: Dams; Design flood; Guidelines; Refurbishment

Abstract: The serious flooding that occurred in Sweden in 1983 led to the establishment of Flodeskommitten. Its main task was to prepare new guidelines for determination of design floods for Swedish dams. Flodeskommitten released its final report in 1990. In the guidelines, the design flood for a dam is obtained through transformation of extreme climatological and hydrological conditions. The new guidelines result generally in higher design floods for existing dams than they were constructed for and many spillways have too low discharge capacity. Based on the design-flood guidelines, the hydropower sector has worked out dam-safety guidelines, RIDAS, and application instructions governing the dam safety practice in the country. As recommended, all class I (high hazard) dams have to be designed to discharge the design floods. Several refurbishment examples are given to illustrate the on-going work on dam safety carried out by Vattenfall AB. The refurbishment of the dams considers as a whole technical, economical and environmental aspects.

DOI:

Year: 2002

Copyright © 2024 International Association for Hydro-Environment Engineering and Research. All rights reserved. | Terms and Conditions