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

57.7% National average
303 Dams tracked
87,729 GL Total capacity
04 Jun 2026 Last Updated

O'Shannassy Water Level

Victoria · Melbourne
Reviewed by Water Resources Analyst
Hydrological Summary: O'Shannassy currently stores 97.3% 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: 2026-06-01 08:00:00
Current Storage Level 97.3%
Total Capacity
3 GL
Status
Normal / Safe
Operator
Melbourne Water
Last Updated
01 Jun 2026
Live Weather
6°C Raining
Rain: 0.2mm | Hum: 98%

Water Level Analysis

Water levels at O'Shannassy remain exceptionally high. With current readings at 97.3%, the reservoir holds a robust 3 GL. This provides immense water security for the Victoria region.

Catchment & Hydrological Impact

The O'Shannassy River acts as the primary lifeblood for O'Shannassy, making it a cornerstone of the South East Coast (Victoria) network. Hydrological health in this specific drainage basin is vital for downstream ecosystems. The South East Coast (Victoria) region relies heavily on the seasonal inflows captured here.

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. Without the buffer provided by this massive 3 GL storage, regional farming would face extreme volatility.

Ecological & Recreational Context

The surrounding catchment of O'Shannassy also supports diverse local flora and fauna. During periods of healthy water levels, the area often sees an increase in recreational activities such as fishing, boating, and camping. Authorities must constantly balance the need for human water consumption with the ecological necessity of maintaining healthy river systems downstream.

Current Weather & Evaporation Impact

Cooler current temperatures of 6°C help minimize evaporation losses across the reservoir. With raining conditions and 0.2mm of rain, the surrounding drainage basin is currently being naturally irrigated.

Future Outlook & Monitoring

Looking ahead, the trajectory of O'Shannassy's water levels will depend heavily on upcoming seasonal rainfall patterns. State water authorities utilize highly sophisticated monitoring tools to ensure every drop is accounted for. Given the unpredictable nature of Australia's climate, from La Niña flooding to El Niño droughts, maintaining a dynamic operational strategy for O'Shannassy is absolutely essential.

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 97.3% of its total capacity.
Is O'Shannassy currently full?
Yes, O'Shannassy is virtually full at 97.3%.
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 97.3% 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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