Hardy Inlet is a wave-dominated estuary located at the convergence of the Blackwood and Scott Rivers in Western Australia's South West region, near the town of Augusta. It opens to the Southern Ocean via Flinders Bay and is characterized by its significant size, covering approximately 20 square kilometers. The inlet features a complex bathymetry of extensive shallow banks, typically less than 1 meter deep, intersected by deeper channels ranging from 2 to 8 meters. The water is consistently turbid, and the estuary remains permanently open to the ocean, creating a dynamic environment influenced by tides and river flows. This mix of shallow flats and deeper channels provides diverse habitats for a range of estuarine and marine species, making it a popular destination for recreational boating, kayaking, and fishing.