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, 20 November 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 0.0 253.0 16 19,553 57,216 82.2%
Yesterday morning 0.0 253.0 21 19,505 57,328 82.4%
 
This time last year** -13% 284.0 -42.2% 27,795 66,472 95.5%
Last 20 year median** -24% 313.0 -30.3% 25,482 -16.2%

 

* 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 37,492 99.3% 37,890 100.3%
Lauriston 19,790 18,220 92.1% 19,610 99.1%
Malmsbury 12,034 1,503 12.5% 9,030 75%
TOTAL 69,594 57,216 82.2% 66,530 95.6%

 

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 47,403 86.4% 54,560 99.5%

 

 

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, 11 November 2018 58,401 83.9% -101 -0.1%
Monday, 12 November 2018 58,255 83.7% -146 -0.2%
Tuesday, 13 November 2018 58,131 83.5% -124 -0.2%
Wednesday, 14 November 2018 58,034 83.4% -97 -0.1%
Thursday, 15 November 2018 57,914 83.2% -120 -0.2%
Friday, 16 November 2018 57,717 82.9% -198 -0.3%
Saturday, 17 November 2018 57,625 82.8% -92 -0.1%
Sunday, 18 November 2018 57,468 82.6% -156 -0.2%
Monday, 19 November 2018 57,328 82.4% -140 -0.2%
Tuesday, 20 November 2018 57,216 82.2% -113 -0.2%
10 day total -1,287 -1.8%

 

 

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, 11 November 2018 0.0 39 19,383
Monday, 12 November 2018 0.0 20 19,386
Tuesday, 13 November 2018 0.0 24 19,414
Wednesday, 14 November 2018 3.0 29 19,470
Thursday, 15 November 2018 0.0 35 19,492
Friday, 16 November 2018 0.0 10 19,443
Saturday, 17 November 2018 0.0 12 19,505
Sunday, 18 November 2018 0.0 3 19,501
Monday, 19 November 2018 0.0 21 19,505
Tuesday, 20 November 2018 0.0 16 19,553
10 Day Total 3.0 209

* 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, 11 November 2018 12 113 4 116
Monday, 12 November 2018 13 113 4 117
Tuesday, 13 November 2018 13 111 4 115
Wednesday, 14 November 2018 12 109 3 113
Thursday, 15 November 2018 86 110 3 114
Friday, 16 November 2018 120 114 4 117
Saturday, 17 November 2018 91 114 4 118
Sunday, 18 November 2018 93 113 4 118
Monday, 19 November 2018 115 113 4 118
Tuesday, 20 November 2018 113 113 4 117
10 day total 668 1,123 39 1,162
Year to date 3,944 6,088 574 6,662

 

* 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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