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, 27 April 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 0.0 844.0 295 98,752 54,584 78.4%
Yesterday morning 4.0 844.0 426 98,718 54,614 78.5%
 
This time last year** 62% 322.0 94% 5,883 29,434 42.3%
Last 20 year median** 39% 517.0 72.2% 27,468 46.1%

 

* 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 34,040 90.1% 13,600 36%
Lauriston 19,790 18,180 91.9% 13,240 66.9%
Malmsbury 12,034 2,364 19.6% 2,544 21.1%
TOTAL 69,594 54,584 78.4% 29,384 42.2%

 

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 51,955 94.7% 19,957 36.4%

 

 

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, 18 April 2017 53,522 76.9% -84 -0.1%
Wednesday, 19 April 2017 53,455 76.8% -66 -0.1%
Thursday, 20 April 2017 53,407 76.7% -48 -0.1%
Friday, 21 April 2017 53,503 76.9% 96 0.1%
Saturday, 22 April 2017 53,920 77.5% 417 0.6%
Sunday, 23 April 2017 53,910 77.5% -10 0%
Monday, 24 April 2017 53,910 77.5% 0%
Tuesday, 25 April 2017 54,366 78.1% 456 0.7%
Wednesday, 26 April 2017 54,614 78.5% 248 0.4%
Thursday, 27 April 2017 54,584 78.4% -30 0%
10 day total 978 1.4%

 

 

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, 18 April 2017 0.0 11 97,087
Wednesday, 19 April 2017 0.0 7 97,090
Thursday, 20 April 2017 0.0 12 97,113
Friday, 21 April 2017 21.0 65 97,281
Saturday, 22 April 2017 34.0 476 97,758
Sunday, 23 April 2017 0.0 261 97,803
Monday, 24 April 2017 0.0 195 97,867
Tuesday, 25 April 2017 33.0 537 98,403
Wednesday, 26 April 2017 4.0 426 98,718
Thursday, 27 April 2017 0.0 295 98,752
10 Day Total 93.0 2285

* 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, 18 April 2017 85 77 4 81
Wednesday, 19 April 2017 85 48 4 53
Thursday, 20 April 2017 88 48 5 53
Friday, 21 April 2017 93 48 6 54
Saturday, 22 April 2017 30 50 5 55
Sunday, 23 April 2017 30 50 4 54
Monday, 24 April 2017 30 50 4 54
Tuesday, 25 April 2017 32 50 11 61
Wednesday, 26 April 2017 32 50 4 55
Thursday, 27 April 2017 30 48 4 52
10 day total 533 521 51 572
Year to date 44,419 17,235 51,349 68,585

 

* 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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