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, 13 December 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 0.0 332.0 41 28,782 65,334 93.9%
Yesterday morning 0.0 332.0 42 28,725 65,399 94%
 
This time last year** -67% 556.0 -226.6% 93,996 67,636 97.2%
Last 20 year median** -7% 356.0 7.2% 26,706 -3.5%

 

* 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 37,612 99.6% 37,771 100%
Lauriston 19,790 18,520 93.6% 18,690 94.4%
Malmsbury 12,034 9,202 76.5% 11,151 92.7%
TOTAL 69,594 65,334 93.9% 67,612 97.2%

 

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 54,345 99.1% 54,407 99.2%

 

 

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, 4 December 2017 65,917 94.7% -64 -0.1%
Tuesday, 5 December 2017 65,871 94.7% -46 -0.1%
Wednesday, 6 December 2017 65,856 94.6% -15 0%
Thursday, 7 December 2017 65,721 94.4% -136 -0.2%
Friday, 8 December 2017 65,738 94.5% 18 0%
Saturday, 9 December 2017 65,592 94.2% -147 -0.2%
Sunday, 10 December 2017 65,567 94.2% -24 0%
Monday, 11 December 2017 65,482 94.1% -85 -0.1%
Tuesday, 12 December 2017 65,399 94% -84 -0.1%
Wednesday, 13 December 2017 65,334 93.9% -65 -0.1%
10 day total -648 -0.9%

 

 

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, 4 December 2017 3.0 105 28,486
Tuesday, 5 December 2017 0.0 46 28,517
Wednesday, 6 December 2017 0.0 41 28,591
Thursday, 7 December 2017 0.0 21 28,550
Friday, 8 December 2017 0.0 47 28,658
Saturday, 9 December 2017 0.0 3 28,599
Sunday, 10 December 2017 0.0 37 28,660
Monday, 11 December 2017 0.0 8 28,682
Tuesday, 12 December 2017 0.0 42 28,725
Wednesday, 13 December 2017 0.0 41 28,782
10 Day Total 3.0 390

* 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, 4 December 2017 22 55 4 59
Tuesday, 5 December 2017 24 55 4 59
Wednesday, 6 December 2017 24 55 4 59
Thursday, 7 December 2017 24 55 4 59
Friday, 8 December 2017 24 55 4 59
Saturday, 9 December 2017 24 55 4 59
Sunday, 10 December 2017 24 55 4 59
Monday, 11 December 2017 24 55 4 59
Tuesday, 12 December 2017 24 74 4 79
Wednesday, 13 December 2017 24 74 4 79
10 day total 234 586 44 630
Year to date 19,923 9,460 5,014 14,474

 

* 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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