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60.4% National average
303 Dams tracked
87,729 GL Total capacity
19 Jul 2026 Last Updated
Lake Trevallyn Water Level

Lake Trevallyn Water Level

Tasmania · South Esk Great Lake
Reviewed by Water Resources Analyst
Hydrological Summary: Lake Trevallyn currently stores 59.9% of its total 12 GL capacity. Located in TAS and operated by Hydro Tasmania, it is a critical water source for regional supply and irrigation.
Data officially sourced and updated from Tasmania water authorities. Last dataset update: 2026-07-17 17:45:00
Current Storage Level 59.9%
Total Capacity
12 GL
Status
Normal / Safe
Operator
Hydro Tasmania
Last Updated
17 Jul 2026
Live Weather
12°C Partly cloudy
Rain: 0mm | Hum: 64%

Water Level Analysis

Lake Trevallyn is currently exhibiting average water retention levels. Sitting at 59.9%, the total stored volume is 12 GL. Authorities continue to monitor inflows carefully.

Catchment & Hydrological Impact

Fed primarily by the South Esk River, this reservoir plays a critical role in the Tasmania drainage division. Managing the flow from the South Esk River ensures that downstream agricultural zones receive consistent supply. Catchment dynamics in the Tasmania are deeply influenced by the retention capacity of Lake Trevallyn.

Agricultural & Economic Significance

Agriculture in the surrounding areas of Tasmania depends heavily on the water security provided by Lake Trevallyn. Irrigation allocations are directly tied to these storage metrics. Sustainable water management here ensures that both crops and livestock can survive prolonged dry spells.

Ecological & Recreational Context

The surrounding catchment of Lake Trevallyn 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

With a mild reading of 12°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. State water authorities utilize highly sophisticated monitoring tools to ensure every drop is accounted for. 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 Lake Trevallyn?
As of the latest official reading, the water level at Lake Trevallyn is at 59.9% of its total capacity.
Is Lake Trevallyn currently full?
It is partially full, currently holding steady at 59.9%.
What is the maximum water capacity of Lake Trevallyn?
When completely full (100%), Lake Trevallyn can hold up to 12 Gigalitres (GL) of water.
Where is Lake Trevallyn located?
This reservoir is a critical water storage facility located in the state of Tasmania, Australia.
How does the water level at Lake Trevallyn affect local agriculture?
Water levels dictate the irrigation allocations for surrounding farmlands. A healthy level of 59.9% ensures that local farmers have the necessary water security for their seasonal crops and livestock.
Who manages the data for Lake Trevallyn?
The data is sourced from official government authorities including the Bureau of Meteorology (BOM) and specific state water utilities.

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