DEECA Victorian Water Accounts 2022-23

About the area

The Colac system sources water from Olangolah and West Gellibrand reservoirs, which are fed by streams in the Otway Ranges.

Colac has a water treatment plant producing potable water supply for urban use.

This system is supplied by Barwon Water.

The table below shows the total volumes of water supplied from water resources in the Colac system in 2022-23.

Water account component	2021-22 (ML)	2022-23 (ML)
Volume in store
Start volume in store	620	616
End volume in store	617	620
Change in store	(3)	4
Inflows
Inflow from surface water	3,491	3,384
Inflow from groundwater	0	0
Inflow from distribution system	0	0
Inflow from recycled water	0	0
Rainfall	0	0
Unattributed inflows	0	0
Total inflows	3,491	3,384
Outflows
Deliveries
Urban residential	1,444	1,355
Urban non-residential	1,349	1,432
Passed to other systems	0	0
Total deliveries	2,793	2,787
Losses
Evaporation	0	0
System losses	356	351
Total losses	356	351
Other outflows
Unattributed outflows	345	242
Total outflows	3,494	3,380
System efficiency
Distribution system efficiency (%)	80%	82%

Water account component	2021-22 (ML)	2022-23 (ML)
Volume in store
Start volume in store	620	616
End volume in store	617	620
Change in store	(3)	4
Inflows
Inflow from surface water	3,491	3,384
Inflow from groundwater	0	0
Inflow from distribution system	0	0
Inflow from recycled water	0	0
Rainfall	0	0
Unattributed inflows	0	0
Total inflows	3,491	3,384
Outflows
Deliveries
Urban residential	1,444	1,355
Urban non-residential	1,349	1,432
Passed to other systems	0	0
Total deliveries	2,793	2,787
Losses
Evaporation	0	0
System losses	356	351
Total losses	356	351
Other outflows
Unattributed outflows	345	242
Total outflows	3,494	3,380
System efficiency
Distribution system efficiency (%)	80%	82%

Explore the Barwon Water Corporation local report.