Water Resources

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

Last updated: Thursday, 8 December 2016

 

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 7.0 540.0 54 93,320 67,576 97.1%
Yesterday morning 0.0 533.0 19 93,156 67,536 97%
 
This time last year** 64% 196.0 94.7% 4,940 40,580 58.3%
Last 20 year median** 35% 350.0 71.5% 26,604 39.9%

 

* Year To Date since 1 July 2016
**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 37,771 100% 21,784 57.7%
Lauriston 19,790 18,630 94.1% 13,230 66.9%
Malmsbury 12,034 11,175 92.9% 5,474 45.5%
TOTAL 69,594 67,576 97.1% 40,488 58.2%

 

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 54,635 99.6% 25,976 47.4%

 

 

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
Tuesday, 29 November 2016 68,031 97.8% -120 -0.2%
Wednesday, 30 November 2016 67,931 97.6% -100 -0.1%
Thursday, 1 December 2016 67,892 97.6% -39 -0.1%
Friday, 2 December 2016 67,836 97.5% -56 -0.1%
Saturday, 3 December 2016 67,776 97.4% -60 -0.1%
Sunday, 4 December 2016 67,736 97.3% -40 -0.1%
Monday, 5 December 2016 67,716 97.3% -20 0%
Tuesday, 6 December 2016 67,636 97.2% -80 -0.1%
Wednesday, 7 December 2016 67,536 97% -100 -0.1%
Thursday, 8 December 2016 67,576 97.1% 40 0.1%
10 day total -575 -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
Tuesday, 29 November 2016 0.0 45 92,847
Wednesday, 30 November 2016 0.0 59 92,915
Thursday, 1 December 2016 0.0 54 92,962
Friday, 2 December 2016 0.0 52 93,002
Saturday, 3 December 2016 0.0 42 93,042
Sunday, 4 December 2016 0.0 45 93,098
Monday, 5 December 2016 2.0 53 93,159
Tuesday, 6 December 2016 0.0 42 93,168
Wednesday, 7 December 2016 0.0 19 93,156
Thursday, 8 December 2016 7.0 54 93,320
10 Day Total 9.0 466

* Since 1 July 2016

 

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)
Tuesday, 29 November 2016 120 122 4 126
Wednesday, 30 November 2016 117 122 4 126
Thursday, 1 December 2016 117 50 2 53
Friday, 2 December 2016 64 50 4 55
Saturday, 3 December 2016 64 50 4 55
Sunday, 4 December 2016 62 50 4 55
Monday, 5 December 2016 62 50 3 53
Tuesday, 6 December 2016 62 50 7 57
Wednesday, 7 December 2016 62 50 5 55
Thursday, 8 December 2016 64 64 6 70
10 day total 794 660 45 705
Year to date 38,830 4,601 50,738 55,339

 

* 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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