Perth: Region overview
The region is home to waterways and wetlands of national significance. Its groundwater resources support important groundwater dependent ecosystems. The last four decades has seen a long-term decline in rainfall leading to decreased storage levels and aquifer recharge, resulting in an increased reliance on climate resilient water sources, particularly desalination.
Rainfall
614 mm
21% less than last year
77% of long-term average
Storage
31% full
similar to last year
655,300 ML total capacity
Streamflow
Swan-Canning River
Murray River
Harvey River
below average
less than last year
WATER SOURCES
723,708 ML
total water used
2% more than last year
WATER ACCOUNTING STATEMENTS
Assets
209,854 ML
1%
Liabilities
117,530 ML
9%
Inflows
2,184,977 ML
29%
Outflows
2,008,197 ML
20%
Net change
9,051 ML
WATER USE
119,138 ML
surface water diverted
similar to last year
483,191 ML
groundwater extracted
similar to last year
291,026 ML
supplied to urban system
similar to last year
32,958 ML
supplied to irrigation scheme
4% less than last year