Water Resources

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

Last updated: Monday, July 25, 2016

 

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 3.0 94.0 860 12,551 42,893 61.6%
Yesterday morning 1.0 91.0 1,586 11,892 42,241 60.7%
 
This time last year** 36% 61.0 93.1% 867 42,917 61.7%
Last 20 year median** 28% 68.0 76% 3,008 -0.1%

 

* Year To Date since 1 July 2016
**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 24,310 64.4% 20,999 55.6%
Lauriston 19,790 14,280 72.2% 17,150 86.7%
Malmsbury 12,034 4,303 35.8% 4,783 39.7%
TOTAL 69,594 42,893 61.6% 42,932 61.7%

 

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 22,351 40.8% 33,765 61.6%

 

 

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
Saturday, July 16, 2016 37,798 54.3% 283 0.4%
Sunday, July 17, 2016 38,023 54.6% 224 0.3%
Monday, July 18, 2016 38,170 54.8% 147 0.2%
Tuesday, July 19, 2016 38,421 55.2% 251 0.4%
Wednesday, July 20, 2016 38,595 55.5% 174 0.3%
Thursday, July 21, 2016 38,770 55.7% 175 0.3%
Friday, July 22, 2016 39,097 56.2% 327 0.5%
Saturday, July 23, 2016 41,190 59.2% 2,092 3%
Sunday, July 24, 2016 42,241 60.7% 1,051 1.5%
Monday, July 25, 2016 42,893 61.6% 652 0.9%
10 day total 5,378 7.7%

 

 

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
Saturday, July 16, 2016 0.0 365 7,301
Sunday, July 17, 2016 0.0 329 7,559
Monday, July 18, 2016 0.0 251 7,739
Tuesday, July 19, 2016 3.0 240 8,020
Wednesday, July 20, 2016 0.0 213 8,198
Thursday, July 21, 2016 0.0 215 8,383
Friday, July 22, 2016 14.0 233 8,720
Saturday, July 23, 2016 11.0 2111 10,831
Sunday, July 24, 2016 1.0 1586 11,892
Monday, July 25, 2016 3.0 860 12,551
10 Day Total 33.0 6403

* Since 1 July 2016

 

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)
Saturday, July 16, 2016 15 27 4 31
Sunday, July 17, 2016 15 25 5 30
Monday, July 18, 2016 15 25 5 30
Tuesday, July 19, 2016 15 25 5 30
Wednesday, July 20, 2016 15 4 4
Thursday, July 21, 2016 15 5 5
Friday, July 22, 2016 16 5 5
Saturday, July 23, 2016 16 7 7
Sunday, July 24, 2016 16 3 3
Monday, July 25, 2016 15 5 5
10 day total 154 102 46 148
Year to date 393 143 1,914 2,057

 

* Includes spills, environmental releases, passing flows and other operationally required discharges.

** Total Malmsbury Reservoir release only (Main Channel and Coliban River)

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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