Survey of dam impact
COUNCIL consultants will begin to map aquatic habitat in Doon Doon Creek and the Tweed River next week to determine how the raising of Clarrie Hall Dam may impact on fish and other aquatic species.
Scientists from Ecological will undertake the field research, both walking and in canoes, to map critical habitat features such as pools and riffles (rocky or shallow parts with rough water) and determine the number of species within the impacted waterways and the population of each species.
The field work will be undertaken for several days every season during the next year, starting on June 18.
Property owners adjoining Doon Doon Creek and the Tweed River downstream of Clarrie Hall Dam are advised they may see a small team of scientists working on and at the water’s edge.
The field work will continue into the night, as the scientists identify and count frog species.
From the field data collected, Ecological will attempt to identify measures to mitigate any impact the dam has and, if raised, will have on the aquatic environment.