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, 26 May 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 3.0 875.0 34 99,677 54,019 77.6%
Yesterday morning 0.0 872.0 16 99,624 53,974 77.6%
 
This time last year** 52% 417.0 93.4% 6,621 29,333 42.1%
Last 20 year median** 37% 555.0 73.1% 26,777 45.7%

 

* 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 34,611 91.6% 13,872 36.7%
Lauriston 19,790 17,760 89.7% 13,140 66.4%
Malmsbury 12,034 1,648 13.7% 2,392 19.9%
TOTAL 69,594 54,019 77.6% 29,404 42.3%

 

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 52,369 95.5% 20,036 36.5%

 

 

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, 17 May 2017 53,792 77.3% 32 0%
Thursday, 18 May 2017 53,798 77.3% 6 0%
Friday, 19 May 2017 53,830 77.3% 32 0%
Saturday, 20 May 2017 53,934 77.5% 104 0.2%
Sunday, 21 May 2017 53,928 77.5% -6 0%
Monday, 22 May 2017 53,961 77.5% 32 0%
Tuesday, 23 May 2017 53,948 77.5% -13 0%
Wednesday, 24 May 2017 53,980 77.6% 32 0%
Thursday, 25 May 2017 53,974 77.6% -6 0%
Friday, 26 May 2017 54,019 77.6% 45 0.1%
10 day total 259 0.4%

 

 

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
Wednesday, 17 May 2017 0.0 15 99,344
Thursday, 18 May 2017 0.0 21 99,363
Friday, 19 May 2017 4.0 38 99,416
Saturday, 20 May 2017 17.0 61 99,528
Sunday, 21 May 2017 0.0 58 99,537
Monday, 22 May 2017 0.0 53 99,576
Tuesday, 23 May 2017 0.0 16 99,576
Wednesday, 24 May 2017 0.0 28 99,621
Thursday, 25 May 2017 0.0 16 99,624
Friday, 26 May 2017 3.0 34 99,677
10 Day Total 24.0 340

* 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, 17 May 2017 30 4 4
Thursday, 18 May 2017 33 4 4
Friday, 19 May 2017 32 4 4
Saturday, 20 May 2017 32 4 4
Sunday, 21 May 2017 32 4 4
Monday, 22 May 2017 32 4 4
Tuesday, 23 May 2017 32 4 4
Wednesday, 24 May 2017 32 4 4
Thursday, 25 May 2017 32 4 4
Friday, 26 May 2017 32 4 4
10 day total 315 42 42
Year to date 45,290 18,356 51,470 69,825

 

* 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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