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Other Catchments
STIRLING DAM CATCHMENT & OTHER CATCHMENTS IN SOUTH-WEST W.A.
An 11% reduction in annual rainfall and a 31% reduction in annual water yield are expected for the Stirling Dam catchment by the middle of the 21st century. The predicted reduction in runoff for the Stirling Dam catchment is expected to be representative of the likely responses of nearby catchments in the high rainfall zone along the Darling Scarp (Berti et al 2004).
CATCHMENTS IN THE SOUTH-WEST COAST OF AUSTRALIA
With an expected decrease in winter rainfall by -8 to +2% by 2030, changes in catchments in the South West coast of Australia are likely to experience annual runoffs of -25 to +10%, with a decrease in soil moisture up to 20% (Chiew et al 1995).
CATCHMENTS IN THE SOUTH AUSTRALIAN GULF
Winter and annual water runoff is likely to decrease by up to 25% by 2030, with soil moisture decreasing by up to 10% (Chiew et al 1995).
CATCHMENTS WEST OF THE GREAT DIVIDING RANGE
The catchments west of the Great Dividing Range are expected to become drier than the coastal catchments, with run-off coefficients generally less than 15% (Chiew et al 1995).
In specific, modelling results for these catchments estimated that the regions +5 to -5% change in annual rainfall by 2030 would lead to changes in annual water run off of -25 to +15% across different seasons, and a decrease in soil wetness of up to 10% (Chiew et al 1995).
CATCHMENTS DRAINING INTO THE MURRAY
Winter runoff is likely to decreases by up to 15% in catchments draining into the Murray (Chiew et al 1995). This is expected to bring about significant decreases in annual water flow in the Murray River.
COASTAL CATCHMENTS IN SOUTH-EAST AUSTRALIA
By 2030, winter rain runoff in coastal catchments in South-East Australia are expected to change by -20% to +5% (Chiew et al 1995).
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