Flood investigations undertaken in the Yarriambiack Shire area have produced detailed information regarding likely riverine and stormwater flooding. VICSES have used these investigations to generate the Warracknabeal Local Flood Guide and the Warracknabeal Flood Risk Information Card. Although the focus of these products is for Warracknabeal, they are also relevant and useful to people that live along Yarriambaick Creek and who live in towns downstream of Warracknabeal: Brim, Beulah and Hopetoun. Yarriambiack Shire Council Shire Municipal Flood Emergency Plan is currently being created.
Click on the map to view the location map of Dunmunkle Creek, Yarriambiack Creek and WImmer River in relation to towns impacted.
Yarriambiack Shire has a history of flooding, including the most significant recent flood event in 2011 which recorded widespread riverine and stormwater flooding throughout the Yarriambaick Shire region. The highest number of buildings impacted by flooding was recorded in Rupanyup and Warracknabeal. Although minor flood impacts were felt in Brim, Beulah and Hopetoun, a significant number of houses were isolated during this event, with widespread damage to roads, crops, stock losses and other community assets along Yarriambiack and Dunmunkle creeks.
There is significant lead time during riverine flood events, for Rupanyup 1 to 1.3 days and Warracknabeal 3 to 5 days after the Wimmera River stream gauge peaks at Glenorchy.
Towns such as Warracknabeal and Rupanyup are also heavily impacted by stormwater flooding, flooding from local rainfall. During January 2011 damage to a significant number of buildings was caused by stormwater flooding in these towns. In Rupanyup over 149 mm fell over 3 days impacting the Rupanyup Café, and buildings in Cromie, Stewart, Edward, Gibson, Walter, Gordon and Beryl Streets. In Warracknabeal more than 151 mmm over 5 days impacting houses in Lyle Street, Gardiner Street, McIntyre Street, Asquith Reserve and the Borung Highway (east of the Racecourse).
|Jung stream gauge height (m)||Warracknabeal flood extent map links|