Rookwood Weir (Managibei Gamu) achieves industry first ISC rating

Rookwood Weir (Managibei Gamu) has achieved another industry first for its commitment to sustainable design and construction practices. 

The Infrastructure Sustainability Council (ISC) has awarded the project an “excellent” rating for sustainability performance during the weir’s construction. 

The “As Built” rating comes after the weir was recognised in 2023 for economic, social and environmental outcomes during the project’s design phase. 

This is the first time a weir in Australia or New Zealand has been certified for an ISC rating and acknowledges the project’s focus on habitat connectivity, local employment and training. 

As part of the rating, Rookwood Weir has been commended for its innovative fishlock and turtle passage, both of which will help local river species safely navigate the weir with the flows of the Fitzroy River. 

It has also achieved significant energy and carbon savings, with construction and design elements reducing both the amount of cement required for the build and the volume of earth to be extracted. 

The sustainability recognition follows the project winning the 2023 Premier’s Award for Excellence and being named joint winner of the Queensland Major Contractors Association’s Project of the Year Over $100M Award. 

Construction of the weir was completed in November 2023, while the process to test the weir’s infrastructure was finalised in April 2024. 

All environmental requirements have been fulfilled and Sunwater is working with customers to deliver first water from the weir in the coming weeks.