DELWP regularly updates the community on the status of the state’s water across a variety of categories including storage levels, rainfall, and seasonal outlooks.

Contact the water reporting team at water.reporting@delwp.vic.gov.au for additional information or assistance.

This week's storage levels

StorageStorage level (%)Source data datePrevious week’s level (%)Previous year's level (%)
Melbourne Water
Thomson69.312-May-2169.557.8
Cardinia81.112-May-2181.872.1
Upper Yarra48.212-May-2148.445.1
Sugarloaf94.512-May-2195.898.1
Silvan86.612-May-2186.085.8
Tarago100.012-May-21100.076.2
Yan Yean85.512-May-2185.276.4
Greenvale94.812-May-2193.386.2
Maroondah38.612-May-2146.893.3
O'Shannassy65.112-May-2175.6100.0
All storages71.512-May-2171.863.0
Goulburn-Murray Water
Dartmouth*63.712-May-2163.949.7
Hume*42.612-May-2142.419.9
Eildon55.912-May-2156.242.2
Eppalock (Total)35.212-May-2135.632.4
Cairn Curran38.012-May-2138.338.2
Nillahcootie71.412-May-2171.848.1
Tullaroop40.312-May-2140.863.6
Barwon Water
Geelong and district66.212-May-2165.855.4
Central Highlands Water
Ballarat and district81.011-May-2181.180.3
Coliban Water
Coliban Southern72.312-May-2173.268.3
Gippsland Water
Moondarra100.012-May-21100.0100.0
Grampians Wimmera Mallee Water
Grampians storages28.812-May-2129.029.7
South Gippsland Water
Major systems68.807-May-2169.297.8
Southern Rural Water
Glenmaggie32.512-May-2133.365.9
Blue Rock99.912-May-21100.1100.3
Rosslynne23.712-May-2123.520.2
Werribee Basin**61.612-May-2159.456.6
Westernport Water
Candowie69.007-May-2169.589.0

* Victoria has a 50% share of inflows to Dartmouth and in Hume

** Werribee Basin storage value is the combined volume of the Melton, Merrimu and Pykes reservoirs

Map of rainfall received in the last seven days

As at 9 January 2020 total rainfall received in the last seven days in millimeters

View the map on the BOM Website.

Rainfall in the Melbourne and Geelong region in the last seven days:

DateMelbourne (Olympic Park)Upper YarraThomsonGeelong
Rainfall (mm)Rainfall (mm)Rainfall (mm)Rainfall (mm)
6/05/202100.20.60
7/05/20210.2000
8/05/202100.20.20
9/05/20210.45.21.60
10/05/20210.201.20
11/05/202115.83.41.83.4
12/05/20210.80.413.40.6
Total 17.49.418.84

View daily rainfall at:

Map of total rainfall received month to date

As at 9 January percentage of rainfall received in January 2020 compared to long term average

View the map on the BOM Website.

Total rainfall received month to date in the Melbourne and Geelong region:

SiteRainfall (mm) - Total month to dateMay Rainfall Average (mm)Calculation method (for average)
Melbourne (Olympic Park)48.446.5Mean rainfall (mm) - 30 year period 1981 -2010 from Melbourne Regional Office gauge
Upper Yarra23.885.5As per Melbourne Water
Thomson38.671.9As per Melbourne Water
Geelong39.246.5Mean rainfall (mm) - 28 year period 1983 - 2011 from Grovedale (Geelong Airport) gauge

Seasonal Climate Outlook

BoM Climate outlook (6 May 2021):

June to August is likely to be slightly wetter than average for most of Victoria (50-70% chance of exceeding the median). Central and north-central regions are expected to be wetter than average (greater than 70% chance).

June to August maximum temperatures are likely to be warmer than average across the state (greater than 60% chance), except in north-western Victoria where temperatures are expected to be closer to average. June to August minimum temperatures are also expected to be much warmer than average across Victoria (greater than 75% chance). Western Victoria is slightly warmer than average (65-75% chance).

Next update is expected on 13 May 2021 (pm)

View the full outlook on the BOM Website.

Bureau of Meteorology climate outlook image of the southeast of Australia. Chance of exceeding the median Rainfall.

Climate Driver Update

BoM Climate Driver Update (11 May 2021):

The El Niño–Southern Oscillation (ENSO) continues at neutral levels. Climate model outlooks currently indicate this neutral phase will last at least until October. As such, the Bureau's ENSO Outlook is INACTIVE.

Oceanic indicators of ENSO persist at neutral levels, with Pacific sea surface temperatures close to the long-term average across most of the equatorial region. Atmospheric indicators such as the Southern Oscillation Index and cloud patterns are also close to average.

The Madden–Julian Oscillation is over the Indian Ocean region. It is forecast to move eastwards across Australian longitudes over the coming fortnight.

The Southern Annular Mode (SAM) has been positive for the past week. It is expected to remain positive for the coming fortnight. SAM typically has little influence on Australian rainfall during autumn, but may have a drying influence for parts of south-west and south-east Australia over the coming fortnight.

The Indian Ocean Dipole is currently neutral and likely to remain neutral during the first half of winter.

The next update is expected on 25 May 2021 (pm)

View the full update on the BOM Website

El Nino Watch image from the Bureau of Meteorology

Seasonal Determinations

Seasonal determinations are made against water shares to provide allocations in declared systems. In northern Victoria, Goulburn-Murray Water makes the seasonal determinations in the relevant systems, while Southern Rural Water makes the seasonal determinations in the Thomson/Macalister and Bacchus Marsh/Werribee systems.

SystemSeasonal DeterminationsDate updated
Goulburn-Murray Water - 2020-21
 HRWSLRWS 
Goulburn100%0%1 Apr 2021
Broken100%100%
Murray100%0%
Campaspe100%0%
Loddon100%0%
Bullarook100%100%
Southern Rural Water - 2020-21
 HRWSLRWS 
Bacchus Marsh/Werribee100%100%6 Apr 2021
Thomson/Macalister100%100%6 Apr 2021
Grampians Wimmera Mallee Water - 2020-21
Wimmera-Mallee Pipeline Product57%9 Apr 2021
Coliban Water- 2020-21
Coliban Rural System100%Opening announcement
1 July 2020

Additional Information

Weather and Climate

For most up to date information regarding rainfall conditions, seasonal climate outlooks and other climate information, visit the Bureau of Meteorology site.

Groundwater Restrictions

For current groundwater restrictions visit the Goulburn-Murray Water, Grampians Wimmera Mallee Water and Southern Rural Water sites.

Seasonal Determinations

Seasonal determinations are made against water shares to provide allocations (Glossary). Visit the Victorian Water Register website for current determinations.

Seasonal Determination Outlook

The Northern Victoria Resource Manager provides information about risk of spill and resource outlook (Glossary) for seasonal determinations.

Water Register and Market Information

The Water Register is a public register of all water-related entitlements in Victoria. It has been designed and built to record water entitlements with integrity and provide crucial information for managing Victoria’s water resources.

You can obtain information about trading water in Victoria at the Victorian Water Register Site. Water products that may be traded in Victoria include water shares, allocations and take and use licences (Glossary)

Urban Water Restrictions

Water restrictions are only applicable to customers on a piped water (reticulated) supply. Urban water corporations publish water restrictions on their websites. Visit the Water in Your Region page to find your urban water corporation via the interactive map.

The Bureau of Meteorology’s Water Restrictions also provides a summary of water restrictions.

Visit the DELWP water restrictions page for more detail on the types of restrictions.

Environmental Water Releases

To learn how water for the environment is being used across the rivers and wetlands of Victoria, visit the Victorian Environmental Water Holder website.

Drought Management

Victorian's Drought Preparedness and Response Framework is being used to support drought-affected communities, Visit the Drought Section of the Agriculture Victoria website for further information.

Page last updated: 12/05/21