Glen Mervyn Dam campsite sits 18 km south of Collie in Western Australia's Southwest region, within the Shire of Donnybrook–Balingup. The dam is a popular destination for bush camping, swimming, fishing, and water sports.

The western shore camping area is accessed via a narrow unsealed track unsuitable for caravans. Facilities are basic, with long-drop toilets on site. Camp and cooking fires are not permitted, so visitors should bring a gas stove.

Dogs on leads are welcome, though fox baiting occurs in the surrounding area. Water skiing is restricted to areas deeper than 1. 5 metres. The Bibbulmun Track passes near the dam, making it a convenient stop for long-distance walkers as well.