Yarriambiack Creek, a distributary of the Wimmera River, leaves the river near Drung Drung, about 20 kilometres east of Horsham, and flows northwards about 140 kilometres through Warracknabeal, ending in Lake Coorong just east of Hopetoun. Its flow is intermittent and depends almost entirely on the level of the Wimmera River. After not flowing for most of the previous 15 years, it flooded in September 2010 and January 2011. In 2012 the Wimmera River had a water release. The water from the river flowed through the creek and ended in Warracknabeal. There are a number of weirs built along the creek to hold water.
At Warracknabeal, Brim, Beulah and Hopetoun there are picnic spots, camping areas, gardens and walking trails.