Water Resources

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

Last updated: Friday, 31 March 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 0.0 657.0 0 95,589 54,630 78.5%
Yesterday morning 3.0 656.0 0 95,620 54,796 78.7%
 
This time last year** 54% 305.0 94% 5,780 30,869 44.4%
Last 20 year median** 25% 492.0 71.8% 26,934 43.5%

 

* 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 34,268 90.7% 14,552 38.5%
Lauriston 19,790 18,160 91.8% 13,410 67.8%
Malmsbury 12,034 2,202 18.3% 2,798 23.3%
TOTAL 69,594 54,630 78.5% 30,760 44.2%

 

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 51,510 93.9% 20,172 36.8%

 

 

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
Wednesday, 22 March 2017 55,898 80.3% -87 -0.1%
Thursday, 23 March 2017 55,792 80.2% -106 -0.2%
Friday, 24 March 2017 55,603 79.9% -189 -0.3%
Saturday, 25 March 2017 55,534 79.8% -69 -0.1%
Sunday, 26 March 2017 55,372 79.6% -162 -0.2%
Monday, 27 March 2017 55,252 79.4% -120 -0.2%
Tuesday, 28 March 2017 55,089 79.2% -163 -0.2%
Wednesday, 29 March 2017 54,916 78.9% -173 -0.2%
Thursday, 30 March 2017 54,796 78.7% -120 -0.2%
Friday, 31 March 2017 54,630 78.5% -166 -0.2%
10 day total -1,355 -1.9%

 

 

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
Wednesday, 22 March 2017 10.0 61 95,614
Thursday, 23 March 2017 0.0 63 95,643
Friday, 24 March 2017 0.0 8 95,598
Saturday, 25 March 2017 0.0 16 95,661
Sunday, 26 March 2017 0.0 0 95,636
Monday, 27 March 2017 0.0 17 95,650
Tuesday, 28 March 2017 1.0 0 95,626
Wednesday, 29 March 2017 0.0 0 95,588
Thursday, 30 March 2017 3.0 0 95,620
Friday, 31 March 2017 0.0 0 95,589
10 Day Total 15.0 165

* 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)
Wednesday, 22 March 2017 27 113 4 117
Thursday, 23 March 2017 28 107 4 112
Friday, 24 March 2017 28 116 4 120
Saturday, 25 March 2017 27 113 5 118
Sunday, 26 March 2017 27 113 4 117
Monday, 27 March 2017 27 110 5 115
Tuesday, 28 March 2017 215 113 4 117
Wednesday, 29 March 2017 174 116 4 120
Thursday, 30 March 2017 170 116 4 120
Friday, 31 March 2017 167 116 4 120
10 day total 889 1,133 44 1,177
Year to date 42,285 15,055 51,227 66,282

 

* 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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