The Wimmera catchment comprises the Wimmera River and Millicent
Coast basins. The Wimmera River is the region’s largest
waterway, rising on the north-western slopes of Mount Buangor in
the south-east Wimmera and terminating in Lakes Hindmarsh and
Albacutya in the northern Wimmera. A large number of tributary
streams drain into the river from sections of the Pyrenees and
Grampians ranges. Under periods of higher flow, the Wimmera
River feeds Dunmunkle and Yarriambiack creeks which flow north
into the Mallee. The Millicent Coast Basin in the west of the
region contains most of the Wimmera’s 3000 wetlands and a number
of small streams that flow west into South Australia. Why it is
important to keep our rivers and streams healthy It is important
to keep Wimmera rivers and streams healthy because they provide:
Unfortunately, many Wimmera rivers, creeks and wetlands are
under threat from reduced flows, sedimentation and erosion,
invasion by pest plants and animals and declining water quality.
Gully and land erosion