Water Resources

Coliban System (Southern) data is updated Monday to Friday. The Lake Eppalock (Coliban Water share) data is updated every Tuesday.

Last updated: Monday, 24 July 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 57.0 79 2,011 55,347 79.5%
Yesterday morning 0.0 54.0 91 1,906 55,363 79.6%
 
This time last year** -61% 91.0 -493.7% 11,940 41,190 59.2%
Last 20 year median** -16% 65.0 -43.6% 2,888 25.6%

 

* Year To Date since 1 July 2017
**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 36,665 97.1% 23,844 63.1%
Lauriston 19,790 16,480 83.3% 14,180 71.7%
Malmsbury 12,034 2,202 18.3% 4,217 35%
TOTAL 69,594 55,347 79.5% 42,241 60.7%

 

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 51,961 94.8% 23,529 42.9%

 

 

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
Saturday, 15 July 2017 55,247 79.4% 70 0.1%
Sunday, 16 July 2017 55,251 79.4% 4 0%
Monday, 17 July 2017 55,257 79.4% 6 0%
Tuesday, 18 July 2017 55,332 79.5% 74 0.1%
Wednesday, 19 July 2017 55,448 79.7% 116 0.2%
Thursday, 20 July 2017 55,466 79.7% 18 0%
Friday, 21 July 2017 55,487 79.7% 21 0%
Saturday, 22 July 2017 55,420 79.6% -67 -0.1%
Sunday, 23 July 2017 55,363 79.6% -57 -0.1%
Monday, 24 July 2017 55,347 79.5% -17 0%
10 day total 169 0.2%

 

 

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
Saturday, 15 July 2017 2.0 71 1,028
Sunday, 16 July 2017 0.0 69 1,075
Monday, 17 July 2017 1.0 78 1,149
Tuesday, 18 July 2017 7.0 88 1,294
Wednesday, 19 July 2017 6.0 142 1,501
Thursday, 20 July 2017 0.0 161 1,633
Friday, 21 July 2017 1.0 160 1,775
Saturday, 22 July 2017 0.0 113 1,840
Sunday, 23 July 2017 0.0 91 1,906
Monday, 24 July 2017 3.0 79 2,011
10 Day Total 19.0 1053

* Since 1 July 2017

 

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)
Saturday, 15 July 2017 83 32 5 37
Sunday, 16 July 2017 83 32 5 37
Monday, 17 July 2017 81 57 3 60
Tuesday, 18 July 2017 81 57 2 59
Wednesday, 19 July 2017 81 80 5 85
Thursday, 20 July 2017 76 104 5 109
Friday, 21 July 2017 74 110 5 115
Saturday, 22 July 2017 74 116 5 121
Sunday, 23 July 2017 72 113 4 117
Monday, 24 July 2017 72 113 4 117
10 day total 777 814 44 858
Year to date 1,261 847 123 970

 

* 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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