DEECA Victorian Water Accounts 2024-25

About the area

The Coliban Main Channel is a common water supply system, meaning it services multiple other water supply systems. The Coliban Main Channel conveys water from the Coliban storages (Upper Coliban, Lauriston and Malmsbury reservoirs) to supply rural subsystems, and the Coliban North and Coliban South urban water supply systems.

This system is supplied by Coliban Water.

Water balance

The table below shows the total volumes of water supplied from water resources in the Coliban Main Channel system in 2024-25.

Table 1: Water balance, Coliban Main Channel

Water account component	2023-24 (ML)	2024-25 (ML)
Inflows
Inflow from Malmsbury Reservoir	20,198	14,793
Outflows
Deliveries
Direct deliveries to customers	223	469
Passed to Coliban North system at Sandhurst Reservoir	12,334	5,500
Passed to Poverty Gully rural sub-system	2,060	2,213
Passed to Harcourt rural sub-system	0	1,198
Passed to Emu Valley rural Sub-system	463	1,201
Passed to Spring Gully rural sub-system	94	211
Passed to Specimen Hill rural sub-system	1,404	2,317
Total deliveries	16,578	13,109
Losses
System loss	3,619	1,684
Total losses	3,619	1,684
Total outflows	20,197	14,793
System efficiency
Distribution system efficiency (%)	82%	89%

Water account component	2023-24 (ML)	2024-25 (ML)
Inflows
Inflow from Malmsbury Reservoir	20,198	14,793
Outflows
Deliveries
Direct deliveries to customers	223	469
Passed to Coliban North system at Sandhurst Reservoir	12,334	5,500
Passed to Poverty Gully rural sub-system	2,060	2,213
Passed to Harcourt rural sub-system	0	1,198
Passed to Emu Valley rural Sub-system	463	1,201
Passed to Spring Gully rural sub-system	94	211
Passed to Specimen Hill rural sub-system	1,404	2,317
Total deliveries	16,578	13,109
Losses
System loss	3,619	1,684
Total losses	3,619	1,684
Total outflows	20,197	14,793
System efficiency
Distribution system efficiency (%)	82%	89%

Nearby water supply systems

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Coliban Main Channel

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About the area

Water balance

Table 1: Water balance, Coliban Main Channel

Nearby water supply systems

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Victorian Water Accounts