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: Friday, 20 July 2018

 

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 7.0 43.0 53 1,066 47,694 68.5%
Yesterday morning 0.0 36.0 62 1,052 47,696 68.5%
 
This time last year** -25% 53.0 -53.2% 1,633 55,448 79.7%
Last 20 year median** -28% 55.0 -125.7% 2,406 -16.3%

 

* 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 29,156 77.2% 36,390 96.3%
Lauriston 19,790 15,600 78.8% 16,730 84.5%
Malmsbury 12,034 2,938 24.4% 2,346 19.5%
TOTAL 69,594 47,694 68.5% 55,466 79.7%

 

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 48,316 88.1% 52,040 94.9%

 

 

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 July 2018 47,239 67.9% 24 0%
Thursday, 12 July 2018 47,373 68.1% 133 0.2%
Friday, 13 July 2018 47,439 68.2% 66 0.1%
Saturday, 14 July 2018 47,487 68.2% 48 0.1%
Sunday, 15 July 2018 47,501 68.3% 14 0%
Monday, 16 July 2018 47,547 68.3% 45 0.1%
Tuesday, 17 July 2018 47,581 68.4% 34 0%
Wednesday, 18 July 2018 47,672 68.5% 91 0.1%
Thursday, 19 July 2018 47,696 68.5% 24 0%
Friday, 20 July 2018 47,694 68.5% -1 0%
10 day total 479 0.7%

 

 

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 July 2018 0.0 41 504
Thursday, 12 July 2018 10.0 74 644
Friday, 13 July 2018 0.0 84 720
Saturday, 14 July 2018 0.0 92 780
Sunday, 15 July 2018 0.0 54 807
Monday, 16 July 2018 1.0 49 866
Tuesday, 17 July 2018 1.0 43 908
Wednesday, 18 July 2018 5.0 69 1,015
Thursday, 19 July 2018 0.0 62 1,052
Friday, 20 July 2018 7.0 53 1,066
10 Day Total 25.0 621

* 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)
Wednesday, 11 July 2018 10 4 4
Thursday, 12 July 2018 10 4 4
Friday, 13 July 2018 10 4 4
Saturday, 14 July 2018 10 4 4
Sunday, 15 July 2018 10 4 4
Monday, 16 July 2018 10 4 4
Tuesday, 17 July 2018 10 4 4
Wednesday, 18 July 2018 10 4 4
Thursday, 19 July 2018 15 4 4
Friday, 20 July 2018 10 5 5
10 day total 102 40 40
Year to date 207 78 78

 

* 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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