A project that recently restored a key wetland for migratory shorebirds has won two awards.
Lake Hawdon North is one of the largest wetland systems in the South East of South Australia. Covering more than 2,475 hectares, it is a valuable pit stop for migratory birds.
The restoration has increased availability of this vital habitat for shorebirds by five times. It has also made dramatic improvements to water quality, benefitting many plants and animals. Birds arriving hungry from a long flight and ready to enjoy the wetlands include:
- sharp-tailed sandpiper
- curlew sandpiper
- common greenshank
- red-necked stint.
Many migratory shorebirds make incredible, multi-continent journeys every year. Some of the species stopping in at Lake Hawdon North have come all the way from Siberia in Russia.
The project was an $11.7 million investment, part of the Healthy Coorong, Healthy Basin program. The Australian and South Australian governments both provide funding for the program. The outcomes also reflect strong engagement with First Nations communities. In particular, the First Nations of the South East. Project planning included First Nations cultural values and embedded them in its outcomes.
The project recently won two awards for its significant impacts and achievements.
At the South Australian Water Awards, it received the:
- Infrastructure Project Innovation Award (Regional)
At the Institute of Public Works Engineering Australasia (IPWEA) SA awards, it received the:
- Excellence in Environment and Sustainability Award
These awards celebrate two important aspects of the project. The Water Award acknowledges an innovative approach to water management. One example of this innovation is the custom water regulator.
The water regulator was installed at the western edge of Lake Hawdon North. It allows managers to extend the wetland's 'shallow inundation' period. Keeping the wetland inundated with water until early autumn makes it perfect for migratory birds to feed and rest. When water flows are high, the regulator allows water to run free. A clever rock-ramp fishway means native fish can pass through the wetland in safety.
The IPWEA award recognises the project's engineering work in improving the environment. This work on the project included fencing, access tracks, and minor earthworks. It was all delivered to a high standard, ahead of schedule.
Lake Hawdon North now stands as a model for large-scale wetland restoration. These awards highlight this innovation and impact.
