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Track water storage, capacity and historical trends for major reservoirs in New South Wales, Victoria, Queensland and beyond.

57.3% National average
303 Dams tracked
87,729 GL Total capacity
06 Jun 2026 Last Updated

O'Shannassy Water Level

Victoria · Melbourne
Reviewed by Water Resources Analyst
Hydrological Summary: O'Shannassy currently stores 100% of its total 3 GL capacity. Located in VIC and operated by Melbourne Water, it is a critical water source for regional supply and irrigation.
Data officially sourced and updated from Victoria water authorities. Last dataset update: 2026-06-03 08:00:00
Current Storage Level 100%
Total Capacity
3 GL
Status
Normal / Safe
Operator
Melbourne Water
Last Updated
03 Jun 2026
Live Weather
13°C Partly cloudy
Rain: 0mm | Hum: 77%

Water Level Analysis

O'Shannassy is currently operating near maximum storage limits. Standing at an impressive 100%, the total volume sits at 3 GL. Such elevated levels ensure uninterrupted supply for the surrounding catchments.

Catchment & Hydrological Impact

Fed primarily by the O'Shannassy River, this reservoir plays a critical role in the South East Coast (Victoria) drainage division. Hydrological health in this specific drainage basin is vital for downstream ecosystems. Catchment dynamics in the South East Coast (Victoria) are deeply influenced by the retention capacity of O'Shannassy.

Agricultural & Economic Significance

Agriculture in the surrounding areas of Victoria depends heavily on the water security provided by O'Shannassy. Farmers and agribusinesses monitor these levels closely to plan their seasonal crop yields. Sustainable water management here ensures that both crops and livestock can survive prolonged dry spells.

Ecological & Recreational Context

The surrounding catchment of O'Shannassy also supports diverse local flora and fauna. When capacity allows, O'Shannassy becomes a hub for regional tourism and water sports. Authorities must constantly balance the need for human water consumption with the ecological necessity of maintaining healthy river systems downstream.

Current Weather & Evaporation Impact

With a mild reading of 13°C today, surface evaporation is significantly reduced, helping to preserve current volume. Under current partly cloudy weather, there is no direct rainfall contributing to the immediate storage levels.

Future Outlook & Monitoring

The Bureau of Meteorology's climate outlooks will play a pivotal role in predicting the future inflows for this catchment. Continuous telemetry and advanced hydrological modeling are employed to forecast storage changes. Resilience against extreme weather events remains the ultimate goal for the managers of this critical infrastructure.

Location Map

Frequently Asked Questions

What is the current water level of O'Shannassy?
As of the latest official reading, the water level at O'Shannassy is at 100% of its total capacity.
Is O'Shannassy currently full?
Yes, O'Shannassy is virtually full at 100%.
What is the maximum water capacity of O'Shannassy?
When completely full (100%), O'Shannassy can hold up to 3 Gigalitres (GL) of water.
Where is O'Shannassy located?
This reservoir is a critical water storage facility located in the state of Victoria, Australia.
How does the water level at O'Shannassy affect local agriculture?
Water levels dictate the irrigation allocations for surrounding farmlands. A healthy level of 100% ensures that local farmers have the necessary water security for their seasonal crops and livestock.
Who manages the data for O'Shannassy?
The data is sourced from official government authorities including the Bureau of Meteorology (BOM) and specific state water utilities.

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