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, 21 August 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 2.0 143.0 535 12,924 63,707 91.5%
Yesterday morning 0.0 142.0 933 12,515 63,353 91%
 
This time last year** -19% 170.0 -126.4% 29,257 58,572 84.2%
Last 20 year median** -3% 148.0 32.2% 8,767 8.1%

 

* 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 38,089 100.8% 35,263 93.4%
Lauriston 19,790 19,480 98.4% 16,850 85.1%
Malmsbury 12,034 6,138 51% 7,053 58.6%
TOTAL 69,594 63,707 91.5% 59,166 85%

 

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 52,798 96.3% 29,410 53.6%

 

 

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, 12 August 2017 57,818 83.1% 155 0.2%
Sunday, 13 August 2017 57,972 83.3% 154 0.2%
Monday, 14 August 2017 58,102 83.5% 130 0.2%
Tuesday, 15 August 2017 58,216 83.7% 114 0.2%
Wednesday, 16 August 2017 58,918 84.7% 702 1%
Thursday, 17 August 2017 59,785 85.9% 867 1.2%
Friday, 18 August 2017 61,585 88.5% 1,800 2.6%
Saturday, 19 August 2017 62,739 90.2% 1,155 1.7%
Sunday, 20 August 2017 63,353 91% 614 0.9%
Monday, 21 August 2017 63,707 91.5% 354 0.5%
10 day total 6,044 8.7%

 

 

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
Saturday, 12 August 2017 1.0 207 6,572
Sunday, 13 August 2017 0.0 182 6,768
Monday, 14 August 2017 0.0 191 6,946
Tuesday, 15 August 2017 2.0 182 7,119
Wednesday, 16 August 2017 14.0 754 7,873
Thursday, 17 August 2017 5.0 925 8,797
Friday, 18 August 2017 11.0 1851 10,648
Saturday, 19 August 2017 4.0 1528 11,853
Sunday, 20 August 2017 0.0 933 12,515
Monday, 21 August 2017 2.0 535 12,924
10 Day Total 40.0 7288

* 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, 12 August 2017 182 34 4 38
Sunday, 13 August 2017 182 30 4 35
Monday, 14 August 2017 178 30 4 34
Tuesday, 15 August 2017 178 42 4 46
Wednesday, 16 August 2017 215 40 5 45
Thursday, 17 August 2017 211 40 4 44
Friday, 18 August 2017 211 34 3 37
Saturday, 19 August 2017 512 40 4 44
Sunday, 20 August 2017 595 38 4 42
Monday, 21 August 2017 575 40 3 43
10 day total 3,038 368 39 407
Year to date 5,982 3,004 251 3,255

 

* 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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