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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
Lake Cethana Water Level

Lake Cethana Water Level

Tasmania · Forth
Reviewed by Water Resources Analyst
Hydrological Summary: Lake Cethana currently stores 8.1% 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: 2026-05-31 00:00:00
Current Storage Level 8.1%
Total Capacity
112 GL
Status
Normal / Safe
Operator
Hydro Tasmania
Last Updated
31 May 2026
Live Weather
10°C Raining
Rain: 0.7mm | Hum: 95%

Water Level Analysis

Water levels at Lake Cethana are alarmingly low. Currently at only 8.1% of its 112 GL capacity, the situation requires urgent monitoring. This critical shortage heavily impacts regional water security across Tasmania.

Catchment & Hydrological Impact

Fed primarily by the Forth River, this reservoir plays a critical role in the Tasmania drainage division. Managing the flow from the Forth River ensures that downstream agricultural zones receive consistent supply. 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. Without the buffer provided by this massive 112 GL storage, regional farming would face extreme volatility.

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

Cooler current temperatures of 10°C help minimize evaporation losses across the reservoir. The recorded precipitation of 0.7mm indicates active rainfall in the catchment, which is excellent news for inflows.

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 Cethana?
As of the latest official reading, the water level at Lake Cethana is at 8.1% of its total capacity.
Is Lake Cethana currently full?
No, it is currently experiencing low water levels at 8.1%.
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 8.1% 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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