2004 – Wivenhoe Dam Flood Security Upgrade

D. Gill, B. Cooper, B. Maher, S. Macnish and G. Roads

SEQWater is the major supplier of bulk water to Local Governments and industry in South
East Queensland.

SEQWater owns Wivenhoe, Somerset and North Pine Dams. Wivenhoe
Dam (Lake Wivenhoe) is located on the Brisbane River in Esk Shire. The storage provides
both flood mitigation and water supply storage to Brisbane and Ipswich. The water supply
storage capacity at full supply level is 1,160 GL. An additional 1,450 GL of storage above full
supply level is used for flood mitigation.

Changes to the estimation of extreme rainfall events has resulted in significant increases in
the estimates of the PMF since the original design of Wivenhoe Dam. To upgrade the dam
SEQWater formed an Alliance with Leighton, Coffey, MWH and the NSW Department of
Commerce Dam & Civil Section.

A preferred upgrade option for Wivenhoe Dam has been selected, designed and
construction started by the Wivenhoe Alliance. This paper presents details of the selected upgrade option.

Buy this resource