Storage Inflow Data

Inflow ML: Inflow volume that storage has received in Mega Litres (ML)

POE: The probability of exceedance describes the likelihood of a specific  volume being exceeded in the given time period. E.g. 90% POE means that 90 out of 100 times we would expect higher inflow volumes. A 50% POE is equal to a median average.

% Average: Mean Average - The value obtained by dividing the sum of all inflow volumes by the number of years data is available. Therefore a 50% mean average does not equal a 50% POE.

The inflow statistics are based on historical flow records that have been adjusted to match climate conditions observed since 1975.

December 2021 Inflows 

Murray, Goulburn & Ovens System Storages

 Table of inflows for December 2021 for the Murray (Dartmouth and Hume), Goulburn (Eildon, Goulburn Weir) & Ovens (Buffalo and William Hovell) Storages.
Monthly Inflow Murray System Goulburn System Ovens System
Dartmouth Dam Hume Dam Lake Eildon Goulburn Weir Lake Buffalo Lake William Hovell
Inflow (ML) 119,000 299,000 52,089 39,359 19,229 7,632
POE <10%  <10%  37% 54% 28% 38%
% of Average 276%  225%  98% 72% 112% 94%

 

Broken, Loddon & Campaspe System Storages

Monthly Inflow Broken System Loddon System Campaspe System
Lake Nillahcootie Cairn Curran Reservoir Tullaroop Reservoir Laanecoorie Reservoir Lake Eppalock
Table of inflows for December 2021 for the Broken (Nillahcootie), Loddon (Cairn Curran, Tullaroop and Laanecoorie) & Campaspe (Eppalock) Storages.
Inflow (ML) 58 370 317 0 310
POE 84% 56% 57% Min 47%
% of Average 4% 19% 17% 0% 11%

 

Year to Date Inflows

Murray, Goulburn & Ovens System Storages

Water year 2020/2021: July 2021 to December 2021 Murray System Goulburn System Ovens System
Dartmouth Dam Hume Dam Lake Eildon Goulburn Weir Lake Buffalo Lake William Hovell
 Table of inflows - Year to date - for the Murray (Dartmouth and Hume), Goulburn (Eildon, Goulburn Weir) & Ovens (Buffalo and William Hovell) Storages.
Inflow (ML) 897,000 2,789,000 1,131,831 698,817 385,657 146,900
POE 17%  22% 37% 55% 29% 46%
% of Average 148%  151%  111% 83% 127% 101%

 

Broken, Loddon & Campaspe System Storages

Water year 2020/2021: July 2021 to December 2021 Broken System Loddon System Campaspe System
Lake Nillahcootie Cairn Curran Reservoir Tullaroop Reservoir Laanecoorie Reservoir Lake Eppalock
Table of inflows -Year to date - for the Broken (Nillahcootie), Loddon (Cairn Curran, Tullaroop and Laanecoorie) & Campaspe (Eppalock) Storages.
Inflow (ML) 33,805 51,447 31,338 10,697 99,177
POE 50% 53% 43% 63% 46%
% of Average 76% 63% 81% 28% 83%

 

Inflow data for the current water year against different climate scenarios

Climate Scenarios

The scenarios for different inflow conditions were produced using the following terminology: 

  • Wet Scenario : Inflow volumes that are greater in 10 years out of 100 (10% POE)
  • Average Scenario : Inflow volumes that are greater in 50 years out of 100 (50% POE and not average)
  • Dry Scenario : Inflow volumes that are greater in 90 years out of 100 (90% POE)
  • Extreme Dry Scenario : Inflow volumes that are greater in 99 years out of 100 (99% POE)

In the inflow graphs below actual inflow data is compared to these four scenarios. Inflows are measured in Giga Litres (GL).

Murray System - Dartmouth Dam & Hume Dam

Graph of Dartmouth Reservoir Inflows for 2021-22 Actual data until July.
Dartmouth Dam Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
 Table of actual Dartmouth Reservoir inflows for 2021 - 22 compared to four climate scenarios
June  93  8.0  18  44  111
July  159  12  24  75  185
August  138  16  36  98  220
September  221  21  61  122  239
October  138  22  43  116  250
November  122  5.0  26  63  147
December  119  2.0  15  35  83
Graph of Lake Hume Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Hume Dam Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
  Table of actual Hume Dam inflows for 2021 - 22 compared to four climate scenarios
June  203  22  48  118  340
July  595  34  69  192  674
August  415  12  103  296  749
September  567  33  157  326  781
October  452  20  100  315  786
November  453  1.0  68  187  453
December  299  0.0  34  111  250

Goulburn System - Lake Eildon & Goulburn Weir

Graph of Lake Eildon Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Graph of Lake Eildon Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
 Table of actual Lake Eildon inflows for 2021 - 22 compared to four climate scenarios
June  124  11  22  71  239
July  319  12  55  163  404
August  213  16  84  228  489
September  258  20  78  200  424
October  182  10  47  140  349
November  107  9.0  27  73  180
December  52  8.0  15  40  107
Graph of Goulburn Weir Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Goulburn Weir Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
  Table of actual Goulburn Weir inflows for 2021 - 22 compared to four climate scenarios
June  83  13  22  61  219
July  160  22  43  114  336
August  132  8.0  55  164  383
September  147  21  56  151  372
October  130  22  42  110  314
November  89  11  24  66  184
December  39  8.0  16  42  104

Ovens System - Lake Buffalo & Lake William Hovell

Graph of Lake Buffalo Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Lake Buffalo Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
  Table of actual Lake Buffalo inflows for 2021 - 22 compared to four climate scenarios
June  34  0.0  4.8  22  74
July  126  0.1  11  44  132
August  74  0.1  15  61  147
September  83  0.1  14  55  129
October  54  0.0  9.2  40  118
November  29  0.0  5.1  22  71
December  19  0.6  2.6  10  38
Graph of Lake William Hovell Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Lake William Hovell Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
  Table of actual Lake William Hovell inflows for 2021 - 22 compared to four climate scenarios
June  17  0.2  3.0  12  38
July  46  0.0  6.7  25  61
August  28  0.0  11  34  66
September  30  0.0  9.9  31  58
October  23  0.0  6.5  21  47
November  12  0.8  3.8  11  27
December  7.6  0.9  2.2  5.9  16

Broken System - Lake Nillahcootie

Graph of Lake Nillahcootie Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Lake Nillahcootie Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
Table of actual Lake Nillahcootie inflows for 2021 - 22 compared to four climate scenarios
June  2.0  0.0  0.2  1.5  12
July  10  0.0  0.6  5.1  25
August  3.5  0.0  1.1  9.1  28
September  16  0.0  0.7  7.4  24
October  2.9  0.0  0.2  3.4  19
November  1.3  0.0  0.0  1.3  7.0
December  0.1  0.0  0.0  0.4  2.6

Loddon System - Cairn Curran Reservoir & Tullaroop Reservoir

Graph of Cairn Curran Reservoir Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Cairn Curran Reservoir Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
Table of actual Cairn Curran Reservoir inflows for 2021 - 22 compared to four climate scenarios
June  4.2  0.0  0.4  3.5  26
July  18  0.0  1.1  7.7  42
August  13  0.0  1.9  14  61
September  8.8  0.0  1.4  11  54
October  6.7  0.0  0.6  4.8  29
November  4.0  0.0  0.0  1.3  10
December  0.4  0.0  0.0  0.5  4.0
Graph of Tullaroop Reservoir Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Tullaroop Reservoir Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
 Table of actual Tullaroop Reservoir inflows for 2021 - 22 compared to four climate scenarios
June  1.5  0.0  0.1  1.0  7.3
July  9.3  0.1  0.3  2.2  18
August  10  0.0  0.5  4.9  27
September  6.6  0.0  0.6  5.4  27
October  3.3  0.0  0.2  2.3  17
November  1.5  0.0  0.1  0.9  6.4
December  0.3  0.0  0.1  0.4  2.5

Campaspe System- Lake Eppalock

Graph of Lake Eppalock Inflows for 2021-22. Actual data until July compared to four climate scenarios.
Lake Eppalock Inflows for 2021-22. Actual data compared to four climate scenarios.
Month Actual Inflow (GL) Extreme Dry Scenario (GL) Dry Scenario (GL) Average Scenario (GL) Wet Scenario (GL)
 Table of actual Lake Eppalock inflows for 2021 - 22 compared to four climate scenarios
June  6.9  0.0  0.0  3.2  38
July  28  0.0  0.9  11  67
August  26  0.0  2.0  21  85
September  19  0.0  1.5  16  80
October  15  0.0  0.3  6.5  46
November  10  0.0  0.0  1.6  16
December  0.3  0.0  0.0  0.2  5.5