Water Resources

Our office in Bridge Street, Bendigo, will close 1pm on Monday 24 December 2018 and re-open 8am on Wednesday 2 January 2019. This page will be updated on Monday 24 December 2018 and again on Wednesday 2 January 2019.

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: Thursday, 13 December 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 at 7.30am.

 

To Rainfall Inflow Volume
Day YTD* Day YTD*
millimetres millimetres megalitres megalitres megalitres % full
This morning 2.0 311.0 9 20,172 55,009 79%
Yesterday morning 0.0 308.0 18 20,111 55,078 79.1%
 
This time last year** -7% 332.0 -42.7% 28,785 65,399 94%
Last 20 year median** -15% 356.0 -32.4% 26,706 -18.9%

 

* 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 36,822 97.5% 37,612 99.6%
Lauriston 19,790 16,770 84.7% 18,520 93.6%
Malmsbury 12,034 1,417 11.8% 9,202 76.5%
TOTAL 69,594 55,009 79% 65,334 93.9%

 

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 46,900 85.5% 54,217 98.9%

 

 

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
Tuesday, 4 December 2018 55,897 80.3% -76 -0.1%
Wednesday, 5 December 2018 55,805 80.2% -92 -0.1%
Thursday, 6 December 2018 55,706 80% -99 -0.1%
Friday, 7 December 2018 55,589 79.9% -117 -0.2%
Saturday, 8 December 2018 55,444 79.7% -144 -0.2%
Sunday, 9 December 2018 55,372 79.6% -72 -0.1%
Monday, 10 December 2018 55,353 79.5% -20 0%
Tuesday, 11 December 2018 55,177 79.3% -176 -0.3%
Wednesday, 12 December 2018 55,078 79.1% -100 -0.1%
Thursday, 13 December 2018 55,009 79% -69 -0.1%
10 day total -964 -1.4%

 

 

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
Tuesday, 4 December 2018 0.0 27 19,931
Wednesday, 5 December 2018 0.0 20 19,962
Thursday, 6 December 2018 0.0 31 19,987
Friday, 7 December 2018 0.0 28 20,016
Saturday, 8 December 2018 0.0 20 20,021
Sunday, 9 December 2018 0.0 24 20,058
Monday, 10 December 2018 17.0 43 20,144
Tuesday, 11 December 2018 0.0 23 20,091
Wednesday, 12 December 2018 0.0 18 20,111
Thursday, 13 December 2018 2.0 9 20,172
10 Day Total 19.0 242

* 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)
Tuesday, 4 December 2018 59 84 4 87
Wednesday, 5 December 2018 59 84 4 88
Thursday, 6 December 2018 69 83 4 87
Friday, 7 December 2018 74 83 4 87
Saturday, 8 December 2018 74 83 4 87
Sunday, 9 December 2018 74 83 4 87
Monday, 10 December 2018 74 82 4 86
Tuesday, 11 December 2018 135 83 4 87
Wednesday, 12 December 2018 161 84 4 88
Thursday, 13 December 2018 160 85 4 89
10 day total 940 835 38 872
Year to date 6,073 8,091 662 8,754

 

* 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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