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The capacity of Wivenhoe Dam is 3.132 million megalitres, with an additional temporary holding capacity of 1.967 million megalitres, and a drinking water storage capacity of 1.16 million megalitres. The dam's role in mitigating flooding in the Lower Brisbane River through Lockyer Valley and Brisbane is essential, as it prevents more severe flooding. However, determining when and how to release water into the river can be a significant issue when the dam reaches full capacity. In 2011, the devastating floods in Lockyer Valley and Brisbane prompted the QLD Government to review the dam release strategy. Along with its primary function, the dam's fish stocks contribute to the ecological well-being of the area and provide recreational opportunities for South East Queensland residents, including fishing, boating, and skiing.





1. Flood Mitigation: One of the primary functions of the Wivenhoe Dam is to mitigate the risk of flooding in the region. The dam has a large storage capacity, which means that it can capture and store water during periods of heavy rainfall, reducing the amount of water that flows downstream and potentially causing flooding. The dam is managed in such a way that its waters can be released in a controlled manner during times of heavy rainfall or floods, to further reduce the risk of flooding.

2. Water Supply: The Wivenhoe Dam is also a major source of water supply for the region. The dam's waters are used for both domestic and agricultural purposes, providing a reliable source of clean water for thousands of people and supporting regional agriculture.

3. Hydroelectric Power: The dam also generates electricity through a small hydroelectric power plant. The plant uses the flow of water released from the dam to generate electricity, producing a small but significant amount of renewable energy for the region.

Overall, the Wivenhoe Dam is an important infrastructure asset for the Brisbane region, providing several key functions that support the development of the local economy, the protection of the region from floods, and the provision of reliable water supply.

Wivenhoe Dam is a dam in Brisbane with a capacity of 3.132 million megalitres and additional temporary holding capacity of 1.967 million megalitres. Its main role is to mitigate flood risks in the region by storing water and releasing it in a controlled manner during heavy rainfall or floods. The dam also serves as a major source of water supply for the region, and generates a small amount of renewable energy through a hydroelectric power plant. The dam also contributes to the ecological well-being of the area and provides recreational opportunities for residents.

The Wivenhoe Dam has a capacity of 3.132 million megalitres, with additional temporary holding capacity of 1.967 million megalitres and a drinking water storage capacity of 1.16 million megalitres. Its main purpose is to mitigate flooding in the Lower Brisbane River and Lockyer Valley by storing water during heavy rainfall and releasing it in a controlled manner. The dam also serves as a vital water supply for the region, providing clean water for domestic and agricultural use. Additionally, the dam generates electricity through a hydroelectric power plant, contributing to the region's renewable energy sources. Overall, the Wivenhoe Dam plays a significant role in protecting the area from floods, providing water supply, and supporting the local economy.