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: Thursday, 27 June 2019

 

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 0.0 606.0 55 24,542 43,150 62%
Yesterday morning 0.0 606.0 55 24,465 43,081 61.9%
 
This time last year** -3% 622.0 -32% 32,404 46,817 67.3%
Last 20 year median** -6% 639.0 -16.9% 28,698 -8.5%

 

* Year To Date since 1 July 2018
**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 25,352 67.1% 28,342 75%
Lauriston 19,790 15,800 79.8% 15,740 79.5%
Malmsbury 12,034 1,998 16.6% 2,735 22.7%
TOTAL 69,594 43,150 62% 46,817 67.3%

 

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 34,710 63.3% 48,991 89.3%

 

 

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 June 2019 42,627 61.3% 67 0.1%
Wednesday, 19 June 2019 42,712 61.4% 85 0.1%
Thursday, 20 June 2019 42,789 61.5% 77 0.1%
Friday, 21 June 2019 42,857 61.6% 68 0.1%
Saturday, 22 June 2019 42,897 61.6% 40 0.1%
Sunday, 23 June 2019 42,944 61.7% 48 0.1%
Monday, 24 June 2019 43,012 61.8% 68 0.1%
Tuesday, 25 June 2019 43,061 61.9% 49 0.1%
Wednesday, 26 June 2019 43,081 61.9% 20 0%
Thursday, 27 June 2019 43,150 62% 69 0.1%
10 day total 590 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, 18 June 2019 1.0 111 23,939
Wednesday, 19 June 2019 4.0 104 24,035
Thursday, 20 June 2019 0.0 87 24,120
Friday, 21 June 2019 0.0 86 24,196
Saturday, 22 June 2019 1.0 70 24,245
Sunday, 23 June 2019 0.0 60 24,299
Monday, 24 June 2019 0.0 60 24,376
Tuesday, 25 June 2019 0.0 63 24,434
Wednesday, 26 June 2019 0.0 55 24,465
Thursday, 27 June 2019 0.0 55 24,542
10 Day Total 8.0 751

* Since 1 July 2018

 

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 June 2019 9 4 4
Wednesday, 19 June 2019 9 4 4
Thursday, 20 June 2019 9 4 4
Friday, 21 June 2019 8 4 4
Saturday, 22 June 2019 8 4 4
Sunday, 23 June 2019 8 4 4
Monday, 24 June 2019 8 4 4
Tuesday, 25 June 2019 8 4 4
Wednesday, 26 June 2019 8 4 4
Thursday, 27 June 2019 8 4 4
10 day total 83 41 41
Year to date 18,663 18,434 1,697 20,131

 

* 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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