Water Resources

Coliban System (Southern) data is updated Monday to Friday. The Lake Eppalock (Coliban Water share) data is updated every Tuesday.

Last updated: Wednesday, 20 September 2017

 

Summary

Below is a summary of rainfall, inflows and storage volumes for our Coliban System (Southern) three major catchment storage. Rainfall is recorded at Malmsbury Reservoir.

 

To Rainfall Inflow Volume
Day YTD* Day YTD*
millimetres millimetres megalitres megalitres megalitres % full
This morning 0.0 203.0 229 22,537 70,171 100.8%
Yesterday morning 5.0 203.0 388 22,299 70,290 101%
 
This time last year** -59% 323.0 -177.9% 62,641 69,941 100.5%
Last 20 year median** 3% 196.0 27.1% 16,422 0.3%

 

* Year To Date since 1 July 2017
**Percentages are current against same time last year / last 20 year median


Our storage volumes

Below is a summary of storage levels and rainfall for our three major catchment storages near Kyneton. These storages are required to supply the townships and areas of Castlemaine and Kyneton, and to supplement supply to Bendigo.

 

Storage Capacity at full supply Current volume Volume same time last year
megalitres
megalitres
% full
megalitres
% full
Upper Coliban 37,770 37,970 100.5% 38,010 100.6%
Lauriston 19,790 19,460 98.3% 19,010 96.1%
Malmsbury 12,034 12,741 105.9% 12,766 106.1%
TOTAL 69,594 70,171 100.8% 69,786 100.3%

 

Below is a summary of the storage level and rainfall for our share of Lake Eppalock. We have an 18% capacity share of total volume and inflows.

 

Storage Capacity at full supply Current volume Volume same time last year
megalitres
megalitres
% full
megalitres
% full
Lake Eppalock
- Coliban Share
54,837 54,806 99.9% 54,837 100%

 

 

Last 10 days - storage volume

Below is a 10 day summary of storage levels for our three major catchment storages near Kyneton. These storages are required to supply the townships and areas of Castlemaine and Kyneton, and to supplement supply to Bendigo.

 

Date Current volume Volume change
megalitres % full megalitres % full
Monday, 11 September 2017 69,690 100.1% 85 0.1%
Tuesday, 12 September 2017 69,690 100.1% 0%
Wednesday, 13 September 2017 69,770 100.3% 80 0.1%
Thursday, 14 September 2017 69,795 100.3% 25 0%
Friday, 15 September 2017 69,765 100.2% -30 0%
Saturday, 16 September 2017 70,174 100.8% 409 0.6%
Sunday, 17 September 2017 70,396 101.2% 222 0.3%
Monday, 18 September 2017 70,280 101% -117 -0.2%
Tuesday, 19 September 2017 70,290 101% 10 0%
Wednesday, 20 September 2017 70,171 100.8% -119 -0.2%
10 day total 566 0.8%

 

 

Last 10 days - rainfall and inflows

Below is a 10 day summary of rainfall and inflows for our three major catchment storages near Kyneton.

 

Date Malmsbury
rainfall
(mm)
Inflow from water balance calculation
Inflow Year to date Inflow *
megalitres megalitres
Monday, 11 September 2017 0.0 321 19,877
Tuesday, 12 September 2017 1.0 220 19,987
Wednesday, 13 September 2017 1.0 188 20,208
Thursday, 14 September 2017 5.0 184 20,428
Friday, 15 September 2017 2.0 192 20,562
Saturday, 16 September 2017 6.0 574 21,136
Sunday, 17 September 2017 0.0 713 21,849
Monday, 18 September 2017 0.0 450 22,036
Tuesday, 19 September 2017 5.0 388 22,299
Wednesday, 20 September 2017 0.0 229 22,537
10 Day Total 20.0 3459

* Since 1 July 2017

 

Last 10 days - Lauriston and Malmsbury releases (Coliban Main Channel and Coliban River)

Below is a 10 day summary of discharges from Lauriston Reservoir and Malmsbury Reservoir to the Coliban River and Coliban Main Channel. Discharges from Lauriston Reservoir flow downstream and are recaptured in Malmsbury Reservoir. Coliban River discharges may be passing flows as required under our Bulk Entitlement, Environmental Reserve Discharges (as directed by the North Central Catchment Management Authority) or reservoir spills. Coliban Main Channel discharges are to supply Castlemaine, Coliban Rural System (Southern) and supplement supply to Coliban System Northern (Bendigo).

 

Date Lauriston Reservoir Malmsbury Reservoir
Main Channel
Coliban River*
Total**
(ML/day) (ML/day)
(ML/day)
(ML/day)
Monday, 11 September 2017 133 130 130
Tuesday, 12 September 2017 133 101 101
Wednesday, 13 September 2017 133 122 122
Thursday, 14 September 2017 136 173 173
Friday, 15 September 2017 136 160 160
Saturday, 16 September 2017 142 155 155
Sunday, 17 September 2017 813 471 471
Monday, 18 September 2017 103 280 280
Tuesday, 19 September 2017 312 230 230
Wednesday, 20 September 2017 461 345 345
10 day total 2,502 2,167 2,167
Year to date 14,062 3,369 2,643 6,012

 

* Includes spills, environmental releases, passing flows and other operationally required discharges.

** Total Malmsbury Reservoir release only (Main Channel and Coliban River)

 

> Catchment storages and holding basin information from the Bureau of Meteorology website


The Bureau of Meteorology (BOM) website has archive volume information on some of our storages and holding basins dating back to 2011. The information is updated every Friday. Click on the links below to visit the BOM website.

Barkers Creek
Lauriston

Malmsbury
McCay
Sandhurst
Spring Gully
Upper Coliban

If you have any suggestions or requests regarding this page we'd love to hear them.
Please email communications@coliban.com.au

 

 

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