Water Resources

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

Last updated: Tuesday, 21 November 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 0.0 284.0 62 27,785 66,428 95.5%
Yesterday morning 0.0 284.0 105 27,795 66,530 95.6%
 
This time last year** -81% 515.0 -232.4% 92,368 68,798 98.9%
Last 20 year median** -11% 315.0 8.1% 25,534 -3.6%

 

* 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 37,811 100.1% 37,850 100.2%
Lauriston 19,790 19,630 99.2% 19,650 99.3%
Malmsbury 12,034 8,987 74.7% 11,199 93.1%
TOTAL 69,594 66,428 95.5% 68,699 98.7%

 

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 54,560 99.5% 55,131 100.5%

 

 

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
Sunday, 12 November 2017 66,184 95.1% -46 -0.1%
Monday, 13 November 2017 66,121 95% -63 -0.1%
Tuesday, 14 November 2017 66,058 94.9% -63 -0.1%
Wednesday, 15 November 2017 65,994 94.8% -64 -0.1%
Thursday, 16 November 2017 66,153 95.1% 159 0.2%
Friday, 17 November 2017 66,472 95.5% 319 0.5%
Saturday, 18 November 2017 66,508 95.6% 36 0.1%
Sunday, 19 November 2017 66,472 95.5% -36 -0.1%
Monday, 20 November 2017 66,530 95.6% 58 0.1%
Tuesday, 21 November 2017 66,428 95.5% -103 -0.1%
10 day total 198 0.3%

 

 

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
Sunday, 12 November 2017 0.0 40 26,732
Monday, 13 November 2017 0.0 40 26,764
Tuesday, 14 November 2017 0.0 43 26,803
Wednesday, 15 November 2017 0.0 35 26,837
Thursday, 16 November 2017 10.0 105 27,079
Friday, 17 November 2017 13.0 401 27,481
Saturday, 18 November 2017 0.0 260 27,600
Sunday, 19 November 2017 0.0 190 27,650
Monday, 20 November 2017 0.0 105 27,795
Tuesday, 21 November 2017 0.0 62 27,785
10 Day Total 23.0 1282

* 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)
Sunday, 12 November 2017 24 55 5 60
Monday, 13 November 2017 24 50 4 55
Tuesday, 14 November 2017 24 50 4 55
Wednesday, 15 November 2017 24 50 3 53
Thursday, 16 November 2017 24 50 7 57
Friday, 17 November 2017 24 50 4 54
Saturday, 18 November 2017 25 50 4 55
Sunday, 19 November 2017 25 50 4 55
Monday, 20 November 2017 25 50 4 54
Tuesday, 21 November 2017 25 50 4 55
10 day total 242 507 44 552
Year to date 18,251 8,258 4,922 13,180

 

* 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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