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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
Lake Cethana Water Level

Lake Cethana Water Level

Tasmania · Forth
Reviewed by Water Resources Analyst
Hydrological Summary: Lake Cethana currently stores 6.1% of its total 112 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: 2026-06-02 00:00:00
Current Storage Level 6.1%
Total Capacity
112 GL
Status
Normal / Safe
Operator
Hydro Tasmania
Last Updated
02 Jun 2026
Live Weather
12°C Partly cloudy
Rain: 0mm | Hum: 61%

Water Level Analysis

Reservoir storage at Lake Cethana has reached critically low levels. Currently at only 6.1% of its 112 GL capacity, the situation requires urgent monitoring. Extended drought conditions or lack of significant inflows into the catchment are likely the primary drivers of this severe depletion.

Catchment & Hydrological Impact

Fed primarily by the Forth River, this reservoir plays a critical role in the Tasmania drainage division. Hydrological health in this specific drainage basin is vital for downstream ecosystems. The Tasmania region relies heavily on the seasonal inflows captured here.

Agricultural & Economic Significance

Beyond standard municipal supply, Lake Cethana is a vital asset for the regional agricultural economy in Tasmania. The local economy, heavily rooted in agriculture, fluctuates in tandem with the health of this reservoir. Sustainable water management here ensures that both crops and livestock can survive prolonged dry spells.

Ecological & Recreational Context

Ecologically, the reservoir and its immediate wetlands serve as a crucial habitat for native Australian wildlife. When capacity allows, Lake Cethana becomes a hub for regional tourism and water sports. However, environmental flow releases must be carefully balanced to protect downstream river health.

Current Weather & Evaporation Impact

With a mild reading of 12°C today, surface evaporation is significantly reduced, helping to preserve current volume. With 0mm of recent rainfall and partly cloudy skies, the catchment is relatively dry today.

Future Outlook & Monitoring

Looking ahead, the trajectory of Lake Cethana's water levels will depend heavily on upcoming seasonal rainfall patterns. Continuous telemetry and advanced hydrological modeling are employed to forecast storage changes. Given the unpredictable nature of Australia's climate, from La Niña flooding to El Niño droughts, maintaining a dynamic operational strategy for Lake Cethana is absolutely essential.

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Frequently Asked Questions

What is the current water level of Lake Cethana?
As of the latest official reading, the water level at Lake Cethana is at 6.1% of its total capacity.
Is Lake Cethana currently full?
No, it is currently experiencing low water levels at 6.1%.
What is the maximum water capacity of Lake Cethana?
When completely full (100%), Lake Cethana can hold up to 112 Gigalitres (GL) of water.
Where is Lake Cethana located?
This reservoir is a critical water storage facility located in the state of Tasmania, Australia.
How does the water level at Lake Cethana affect local agriculture?
Water levels dictate the irrigation allocations for surrounding farmlands. A healthy level of 6.1% ensures that local farmers have the necessary water security for their seasonal crops and livestock.
Who manages the data for Lake Cethana?
The data is sourced from official government authorities including the Bureau of Meteorology (BOM) and specific state water utilities.

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