Carseldine Channel is approximately 5.5 km in length and joins Cabbage Tree Creek approximately 5.5 km upstream of the catchment outlet at Shorncliffe. The Carseldine Channel has two streams. One originates on Ridley Road, runs under the railway lines, across Norris Road, continues behind the old Telegraph Road landfill, where it joins the second stream which runs on the other side of the old Telegraph Road landfill. The merged stream joins the main branch of Cabbage Tree Creek behind the Sandgate Hawks football fields.