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: Tuesday, 23 April 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 0.0 401.0 8 21,171 41,609 59.8%
Yesterday morning 0.0 401.0 10 21,189 41,706 59.9%
 
This time last year** -18% 472.0 -44.3% 30,553 47,885 68.8%
Last 20 year median** -28% 513.0 -31% 27,734 -15.1%

 

* 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 24,546 65% 29,191 77.3%
Lauriston 19,790 15,560 78.6% 16,670 84.2%
Malmsbury 12,034 1,503 12.5% 1,856 15.4%
TOTAL 69,594 41,609 59.8% 47,717 68.6%

 

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 38,067 69.4% 50,059 91.3%

 

 

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, 14 April 2019 42,415 60.9% -50 -0.1%
Monday, 15 April 2019 42,288 60.8% -126 -0.2%
Tuesday, 16 April 2019 42,196 60.6% -92 -0.1%
Wednesday, 17 April 2019 42,122 60.5% -74 -0.1%
Thursday, 18 April 2019 42,030 60.4% -92 -0.1%
Friday, 19 April 2019 41,933 60.3% -98 -0.1%
Saturday, 20 April 2019 41,839 60.1% -94 -0.1%
Sunday, 21 April 2019 41,788 60% -51 -0.1%
Monday, 22 April 2019 41,706 59.9% -81 -0.1%
Tuesday, 23 April 2019 41,609 59.8% -98 -0.1%
10 day total -856 -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
Sunday, 14 April 2019 0.0 14 21,194
Monday, 15 April 2019 0.0 0 21,150
Tuesday, 16 April 2019 0.0 0 21,144
Wednesday, 17 April 2019 0.0 0 21,169
Thursday, 18 April 2019 0.0 7 21,172
Friday, 19 April 2019 0.0 5 21,158
Saturday, 20 April 2019 0.0 0 21,148
Sunday, 21 April 2019 0.0 4 21,183
Monday, 22 April 2019 0.0 10 21,189
Tuesday, 23 April 2019 0.0 8 21,171
10 Day Total 0.0 48

* 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)
Sunday, 14 April 2019 32 62 4 66
Monday, 15 April 2019 103 62 4 65
Tuesday, 16 April 2019 124 62 3 65
Wednesday, 17 April 2019 131 63 3 66
Thursday, 18 April 2019 142 62 3 65
Friday, 19 April 2019 144 61 3 64
Saturday, 20 April 2019 146 62 3 65
Sunday, 21 April 2019 150 62 3 66
Monday, 22 April 2019 156 63 4 67
Tuesday, 23 April 2019 156 63 4 67
10 day total 1,283 621 34 655
Year to date 17,045 17,407 1,427 18,834

 

* 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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