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: Monday, 18 February 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 0.0 384.0 26 21,097 47,591 68.4%
Yesterday morning 0.0 384.0 26 21,072 47,658 68.5%
 
This time last year** -7% 411.0 -42.9% 30,148 56,618 81.4%
Last 20 year median** -12% 431.0 -28.9% 27,191 -19%

 

* 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 30,445 80.6% 36,743 97.3%
Lauriston 19,790 15,610 78.9% 17,110 86.5%
Malmsbury 12,034 1,536 12.8% 2,725 22.6%
TOTAL 69,594 47,591 68.4% 56,578 81.3%

 

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 43,510 79.3% 51,974 94.8%

 

 

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, 9 February 2019 48,308 69.4% -128 -0.2%
Sunday, 10 February 2019 48,232 69.3% -77 -0.1%
Monday, 11 February 2019 48,186 69.2% -46 -0.1%
Tuesday, 12 February 2019 48,094 69.1% -91 -0.1%
Wednesday, 13 February 2019 47,968 68.9% -126 -0.2%
Thursday, 14 February 2019 47,866 68.8% -102 -0.1%
Friday, 15 February 2019 47,802 68.7% -64 -0.1%
Saturday, 16 February 2019 47,722 68.6% -80 -0.1%
Sunday, 17 February 2019 47,658 68.5% -64 -0.1%
Monday, 18 February 2019 47,591 68.4% -67 -0.1%
10 day total -846 -1.2%

 

 

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, 9 February 2019 0.0 18 21,030
Sunday, 10 February 2019 2.0 0 21,025
Monday, 11 February 2019 0.0 0 21,059
Tuesday, 12 February 2019 0.0 9 21,056
Wednesday, 13 February 2019 2.0 0 21,011
Thursday, 14 February 2019 0.0 0 20,994
Friday, 15 February 2019 0.0 0 21,020
Saturday, 16 February 2019 0.0 8 21,036
Sunday, 17 February 2019 0.0 26 21,072
Monday, 18 February 2019 0.0 26 21,097
10 Day Total 4.0 86

* 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)
Saturday, 9 February 2019 64 46 4 50
Sunday, 10 February 2019 62 45 4 49
Monday, 11 February 2019 60 48 4 52
Tuesday, 12 February 2019 59 55 4 59
Wednesday, 13 February 2019 57 58 4 62
Thursday, 14 February 2019 55 58 4 62
Friday, 15 February 2019 54 58 4 62
Saturday, 16 February 2019 52 57 4 61
Sunday, 17 February 2019 50 58 4 61
Monday, 18 February 2019 49 58 4 62
10 day total 562 541 40 581
Year to date 12,159 13,512 931 14,443

 

* 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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