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

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

Lake Cethana Water Level

Tasmania · Forth
Reviewed by Water Resources Analyst
Hydrological Summary: Lake Cethana currently stores 15.7% 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: 2026-07-15 00:00:00
Current Storage Level 15.7%
Total Capacity
112 GL
Status
Normal / Safe
Operator
Hydro Tasmania
Last Updated
15 Jul 2026
Live Weather
12°C Partly cloudy
Rain: 0mm | Hum: 78%

Water Level Analysis

Lake Cethana is currently facing severe depletion. Currently at only 15.7% of its 112 GL capacity, the situation requires urgent monitoring. This critical shortage heavily impacts regional water security across Tasmania.

Catchment & Hydrological Impact

The Forth River acts as the primary lifeblood for Lake Cethana, making it a cornerstone of the Tasmania network. 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

Agriculture in the surrounding areas of Tasmania depends heavily on the water security provided by Lake Cethana. 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. During periods of healthy water levels, the area often sees an increase in recreational activities such as fishing, boating, and camping. However, environmental flow releases must be carefully balanced to protect downstream river health.

Current Weather & Evaporation Impact

Cooler current temperatures of 12°C help minimize evaporation losses across the reservoir. With 0mm of recent rainfall and partly cloudy skies, the catchment is relatively dry today.

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. 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 15.7% of its total capacity.
Is Lake Cethana currently full?
No, it is currently experiencing low water levels at 15.7%.
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 15.7% 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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