The boat ramp at Lake Lonsdale is located on the northern side of the lake, off Sandbar Road, approximately 20 minutes north-west of Stawell in western Victoria.

The ramp was upgraded in 2022 through the Better Boating Fund, with a second lane added to boost capacity during busy periods. A rock wall protects the ramp from south-west winds and associated wave action.

The project was delivered by Grampians Wimmera Mallee Water. Lake Lonsdale itself is a large, shallow freshwater reservoir on Mt William Creek, popular for boating, water skiing, swimming, and fishing.

The boat ramp day visitor area includes toilets, rubbish bins, and a car park. Camping is not permitted at the ramp itself, with designated camping areas located nearby.