Water Resources

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

Last updated: Friday, 20 October 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 1.0 235.0 89 25,494 69,011 99.2%
Yesterday morning 0.0 234.0 84 25,435 69,140 99.3%
 
This time last year** -102% 475.0 -246.9% 88,436 70,285 101%
Last 20 year median** -13% 267.0 13.6% 22,033 -1.8%

 

* 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 37,771 100% 38,049 100.7%
Lauriston 19,790 19,610 99.1% 19,420 98.1%
Malmsbury 12,034 11,630 96.6% 12,741 105.9%
TOTAL 69,594 69,011 99.2% 70,210 100.9%

 

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 54,679 99.7% 56,223 102.5%

 

 

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 October 2017 69,452 99.8% -4 0%
Thursday, 12 October 2017 69,658 100.1% 206 0.3%
Friday, 13 October 2017 69,671 100.1% 13 0%
Saturday, 14 October 2017 69,644 100.1% -27 0%
Sunday, 15 October 2017 69,532 99.9% -113 -0.2%
Monday, 16 October 2017 69,477 99.8% -54 -0.1%
Tuesday, 17 October 2017 69,357 99.7% -121 -0.2%
Wednesday, 18 October 2017 69,240 99.5% -117 -0.2%
Thursday, 19 October 2017 69,140 99.3% -100 -0.1%
Friday, 20 October 2017 69,011 99.2% -129 -0.2%
10 day total -445 -0.6%

 

 

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 October 2017 0.0 67 24,329
Thursday, 12 October 2017 20.0 152 24,697
Friday, 13 October 2017 0.0 215 24,889
Saturday, 14 October 2017 0.0 230 25,020
Sunday, 15 October 2017 0.0 127 25,078
Monday, 16 October 2017 0.0 98 25,183
Tuesday, 17 October 2017 0.0 69 25,228
Wednesday, 18 October 2017 0.0 81 25,320
Thursday, 19 October 2017 0.0 84 25,435
Friday, 20 October 2017 1.0 89 25,494
10 Day Total 22.0 1211

* 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)
Wednesday, 11 October 2017 25 36 25 61
Thursday, 12 October 2017 300 80 58 137
Friday, 13 October 2017 25 110 43 153
Saturday, 14 October 2017 194 107 47 154
Sunday, 15 October 2017 60 113 28 141
Monday, 16 October 2017 98 113 19 132
Tuesday, 17 October 2017 25 125 8 133
Wednesday, 18 October 2017 74 163 4 167
Thursday, 19 October 2017 109 163 4 167
Friday, 20 October 2017 103 163 4 167
10 day total 1,013 1,173 239 1,412
Year to date 16,849 4,573 4,777 9,349

 

* 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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