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: Friday, 21 September 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 0.0 189.0 77 16,563 60,491 86.9%
Yesterday morning 1.0 189.0 79 16,520 60,465 86.9%
 
This time last year** -8% 203.0 -37% 22,687 70,171 100.8%
Last 20 year median** -5% 198.0 -0.4% 16,625 -16%

 

* 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 37,811 100.1% 37,970 100.5%
Lauriston 19,790 19,010 96.1% 19,530 98.7%
Malmsbury 12,034 3,670 30.5% 12,565 104.4%
TOTAL 69,594 60,491 86.9% 70,065 100.7%

 

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 48,853 89.1% 54,837 100%

 

 

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, 12 September 2018 60,074 86.3% 88 0.1%
Thursday, 13 September 2018 60,114 86.4% 40 0.1%
Friday, 14 September 2018 60,166 86.5% 52 0.1%
Saturday, 15 September 2018 60,230 86.5% 64 0.1%
Sunday, 16 September 2018 60,298 86.6% 67 0.1%
Monday, 17 September 2018 60,297 86.6% -1 0%
Tuesday, 18 September 2018 60,312 86.7% 15 0%
Wednesday, 19 September 2018 60,400 86.8% 88 0.1%
Thursday, 20 September 2018 60,465 86.9% 66 0.1%
Friday, 21 September 2018 60,491 86.9% 25 0%
10 day total 504 0.7%

 

 

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, 12 September 2018 0.0 106 15,944
Thursday, 13 September 2018 0.0 84 16,004
Friday, 14 September 2018 0.0 86 16,078
Saturday, 15 September 2018 0.0 77 16,175
Sunday, 16 September 2018 4.0 88 16,268
Monday, 17 September 2018 0.0 68 16,282
Tuesday, 18 September 2018 0.0 53 16,332
Wednesday, 19 September 2018 4.0 57 16,438
Thursday, 20 September 2018 1.0 79 16,520
Friday, 21 September 2018 0.0 77 16,563
10 Day Total 9.0 774

* 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)
Wednesday, 12 September 2018 16 4 4
Thursday, 13 September 2018 16 4 4
Friday, 14 September 2018 24 4 4
Saturday, 15 September 2018 29 4 4
Sunday, 16 September 2018 68 4 4
Monday, 17 September 2018 111 4 4
Tuesday, 18 September 2018 80 4 4
Wednesday, 19 September 2018 58 4 4
Thursday, 20 September 2018 58 4 4
Friday, 21 September 2018 57 4 4
10 day total 517 40 40
Year to date 1,467 1,642 333 1,975

 

* 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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