Creek Bed Mapping

Creek Bed Mapping

When land next to a waterway is cleared,  the ground on the creek edge tends to erode and be washed into the creek when it rains. This can cause drastic changes to the shape of the creek banks, to the way that the water currents flow, and to the quality of the water.

CSIRO conducts regular surveys of Slacks Creek to record both the bathymetry (shape and depth of the creek bed) and the types of sediment that can be found on the creek bottom. The survey results allow researchers to discover how often and how much the creek bed changes, and to understand where sediment input loads might cause problems for the plants, trees and wildlife that call Slacks creek home.

The regular surveys also allow us to identify places where rubbish and other debris tends to collect, which makes efforts to remove that rubbish much more efficiently.

The images provided below show bathymetric mapping, one image is the depth contours and the other is the composition of the bottom of the creek, from sandy (lighter colours) through to dense mud (darkest browns).