Water Resources

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

Last updated: Wednesday, 21 February 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.

 

To Rainfall Inflow Volume
Day YTD* Day YTD*
millimetres millimetres megalitres megalitres megalitres % full
This morning 0.0 411.0 0 30,147 56,045 80.5%
Yesterday morning 0.0 411.0 59 30,185 56,261 80.8%
 
This time last year** -48% 608.0 -217% 95,569 59,885 86%
Last 20 year median** -5% 433.0 9.8% 27,198 -6.9%

 

* 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 36,586 96.9% 35,882 95%
Lauriston 19,790 17,020 86% 18,540 93.7%
Malmsbury 12,034 2,439 20.3% 5,326 44.3%
TOTAL 69,594 56,045 80.5% 59,748 85.9%

 

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 51,938 94.7% 52,319 95.4%

 

 

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
Monday, 12 February 2018 57,583 82.7% -219 -0.3%
Tuesday, 13 February 2018 57,463 82.6% -120 -0.2%
Wednesday, 14 February 2018 57,286 82.3% -177 -0.3%
Thursday, 15 February 2018 57,067 82% -218 -0.3%
Friday, 16 February 2018 56,934 81.8% -133 -0.2%
Saturday, 17 February 2018 56,618 81.4% -316 -0.5%
Sunday, 18 February 2018 56,578 81.3% -40 -0.1%
Monday, 19 February 2018 56,397 81% -181 -0.3%
Tuesday, 20 February 2018 56,261 80.8% -136 -0.2%
Wednesday, 21 February 2018 56,045 80.5% -216 -0.3%
10 day total -1,757 -2.5%

 

 

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
Monday, 12 February 2018 0.0 0 30,061
Tuesday, 13 February 2018 0.0 5 30,113
Wednesday, 14 February 2018 0.0 5 30,128
Thursday, 15 February 2018 0.0 14 30,102
Friday, 16 February 2018 0.0 10 30,143
Saturday, 17 February 2018 0.0 0 30,007
Sunday, 18 February 2018 0.0 15 30,148
Monday, 19 February 2018 0.0 0 30,141
Tuesday, 20 February 2018 0.0 59 30,185
Wednesday, 21 February 2018 0.0 0 30,147
10 Day Total 0.0 109

* 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)
Monday, 12 February 2018 13 132 4 136
Tuesday, 13 February 2018 13 137 4 141
Wednesday, 14 February 2018 12 138 4 142
Thursday, 15 February 2018 12 137 4 141
Friday, 16 February 2018 12 138 4 142
Saturday, 17 February 2018 11 138 4 142
Sunday, 18 February 2018 11 136 3 140
Monday, 19 February 2018 12 137 3 140
Tuesday, 20 February 2018 88 138 5 143
Wednesday, 21 February 2018 201 139 5 143
10 day total 385 1,369 40 1,409
Year to date 21,609 16,640 5,312 21,952

 

* 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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