Augusta Boat Harbour sits on Flinders Bay near the mouth of the Blackwood River in Augusta, Western Australia.

Opened as a state-funded facility, it provides recreational and commercial boaters with a four-lane boat launching ramp with floating finger jetties, forty boat pens ranging from 10 to 20 metres, a 50-metre service wharf, and car-and-trailer parking for 160 vehicles.

Services at the pens include single- and three-phase power, water, lighting, toilets, showers, and 24-hour CCTV surveillance. The harbour also serves as a departure point for whale-watching charter tours, with humpback whales commonly spotted in season.

The 6-kilometre Whale Trail walking track connects the mouth of the Blackwood River to the harbour, passing through Flinders Bay.

Boaters accessing the coast from here should be aware of exposed conditions and monitor local tide, wind, and swell forecasts accordingly.