Water Resources

Coliban System (Southern) data is updated Monday to Friday, except on public holidays and when our office is closed over the Christmas period. The Lake Eppalock (Coliban Water share) data is updated on Tuesday.

Last updated: Monday, 28 May 2018

 

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 at 7.30am.

 

To Rainfall Inflow Volume
Day YTD* Day YTD*
millimetres millimetres megalitres megalitres megalitres % full
This morning 0.0 524.0 1 30,989 45,787 65.8%
Yesterday morning 0.0 524.0 0 30,982 45,788 65.8%
 
This time last year** -66% 868.0 -222% 99,772 54,044 77.7%
Last 20 year median** -6% 558.0 9.8% 27,960 -18%

 

* 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 27,437 72.6% 34,687 91.8%
Lauriston 19,790 15,930 80.5% 17,760 89.7%
Malmsbury 12,034 2,420 20.1% 1,677 13.9%
TOTAL 69,594 45,787 65.8% 54,124 77.8%

 

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 49,746 90.7% 52,324 95.4%

 

 

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
Saturday, 19 May 2018 45,842 65.9% -11 0%
Sunday, 20 May 2018 45,860 65.9% 18 0%
Monday, 21 May 2018 45,860 65.9% 0%
Tuesday, 22 May 2018 45,840 65.9% -20 0%
Wednesday, 23 May 2018 45,849 65.9% 9 0%
Thursday, 24 May 2018 45,838 65.9% -11 0%
Friday, 25 May 2018 45,818 65.8% -20 0%
Saturday, 26 May 2018 45,808 65.8% -10 0%
Sunday, 27 May 2018 45,788 65.8% -20 0%
Monday, 28 May 2018 45,787 65.8% -1 0%
10 day total -66 -0.1%

 

 

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
Saturday, 19 May 2018 0.0 0 30,946
Sunday, 20 May 2018 0.0 6 30,976
Monday, 21 May 2018 2.0 12 30,983
Tuesday, 22 May 2018 1.0 9 30,974
Wednesday, 23 May 2018 1.0 5 30,992
Thursday, 24 May 2018 0.0 3 30,992
Friday, 25 May 2018 0.0 4 30,986
Saturday, 26 May 2018 0.0 0 30,988
Sunday, 27 May 2018 0.0 0 30,982
Monday, 28 May 2018 0.0 1 30,989
10 Day Total 6.0 41

* 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)
Saturday, 19 May 2018 14 4 4
Sunday, 20 May 2018 13 4 4
Monday, 21 May 2018 13 4 4
Tuesday, 22 May 2018 13 4 4
Wednesday, 23 May 2018 13 4 4
Thursday, 24 May 2018 13 4 4
Friday, 25 May 2018 13 4 4
Saturday, 26 May 2018 13 4 4
Sunday, 27 May 2018 12 4 4
Monday, 28 May 2018 12 5 5
10 day total 129 44 44
Year to date 31,808 25,429 5,711 31,140

 

* 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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