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, 20 January 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 15.0 597.0 41 94,908 63,809 91.7%
Yesterday morning 0.0 583.0 8 94,808 63,852 91.7%
 
This time last year** 63% 221.0 94.4% 5,283 36,487 52.4%
Last 20 year median** 34% 396.0 71.3% 27,214 42.8%

 

* 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 37,295 98.7% 17,787 47.1%
Lauriston 19,790 18,320 92.6% 13,130 66.3%
Malmsbury 12,034 8,194 68.1% 5,491 45.6%
TOTAL 69,594 63,809 91.7% 36,408 52.3%

 

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 53,440 97.5% 21,860 39.9%

 

 

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, 11 January 2017 64,986 93.4% -146 -0.2%
Thursday, 12 January 2017 64,818 93.1% -168 -0.2%
Friday, 13 January 2017 64,695 93% -124 -0.2%
Saturday, 14 January 2017 64,589 92.8% -106 -0.2%
Sunday, 15 January 2017 64,464 92.6% -125 -0.2%
Monday, 16 January 2017 64,300 92.4% -164 -0.2%
Tuesday, 17 January 2017 64,156 92.2% -145 -0.2%
Wednesday, 18 January 2017 64,034 92% -122 -0.2%
Thursday, 19 January 2017 63,852 91.7% -182 -0.3%
Friday, 20 January 2017 63,809 91.7% -42 -0.1%
10 day total -1,323 -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, 11 January 2017 0.0 19 94,776
Thursday, 12 January 2017 0.0 0 94,756
Friday, 13 January 2017 0.0 5 94,781
Saturday, 14 January 2017 6.0 8 94,801
Sunday, 15 January 2017 0.0 17 94,807
Monday, 16 January 2017 0.0 1 94,784
Tuesday, 17 January 2017 0.0 0 94,784
Wednesday, 18 January 2017 0.0 11 94,840
Thursday, 19 January 2017 0.0 8 94,808
Friday, 20 January 2017 15.0 41 94,908
10 Day Total 21.0 111

* 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, 11 January 2017 27 96 4 100
Thursday, 12 January 2017 25 96 4 100
Friday, 13 January 2017 25 96 4 100
Saturday, 14 January 2017 25 96 4 100
Sunday, 15 January 2017 25 96 4 100
Monday, 16 January 2017 25 96 4 100
Tuesday, 17 January 2017 24 96 4 100
Wednesday, 18 January 2017 24 96 3 99
Thursday, 19 January 2017 25 96 3 99
Friday, 20 January 2017 24 96 4 100
10 day total 248 959 40 999
Year to date 39,912 7,908 50,920 58,828

 

* 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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