This component of the project involves converting part of the existing Isabella Pond to a wetland. The new wetlands will attract birds and other native wildlife and provide more opportunities for recreation. They will also be important in improving water quality downstream in Lake Tuggeranong, the Murrumbidgee River and the wider Murray-Darling Basin.
Isabella Weir will be widened to increase its capacity to accommodate major floods. The planned upgrade will bring Isabella Weir into line with national best practice guidelines and the recently introduced ACT Dam Safety Code.
Carp are an introduced freshwater fish and listed as a pest species. The Commonwealth Government has funded a National Carp Control Plan to undertake preliminary research and planning for the potential release of a biocontrol, the herpes virus, over the next two to three years. Carp in Upper Stranger Pond and Isabella Pond will be removed when the ponds are drained. Qualified ecologists will relocate any native fish and wildlife. Once the project is complete, the ponds will be restocked with native fish to restore a more natural environment in the pond. Removing carp from Isabella and Upper Stranger ponds will reduce the need to remove a large number of dead carp from these ponds if the biocontrol is released.
For more information about the ACT Healthy Waterways project visit www.act.gov.au/h2ok.