You will need this licence if you intend to construct a retaining wall on a waterway in a declared management area. A waterway includes any rivers, inlets and estuaries, as well as any artificial canal, canal system, lake, lagoon or harbour connected to a waterway.
There are five declared management areas in Western Australia:
- Albany waterways
- Avon River
- Wilson Inlet
- Peel-Harvey estuaries
- Leschenault Inlet.