Big Brook Dam

Big Brook Dam is a 95-hectare reservoir located about 4 km north-west of Pemberton in the Shire of Manjimup, Western Australia, set within tall karri forest. Constructed in 1986 to supply water to Pemberton, it is now a managed recreation site. The dam features a sandy swimming beach, calm waters for paddling and fishing, and a sealed 4 km loop walk trail, offering forest scenery and family-friendly picnic facilities.

Visitors can expect a large freshwater reservoir surrounded by karri forest with a sandy beach area for swimming, calm water for kayaking, canoeing and stand-up paddleboarding, and a sealed 4 km loop trail around the dam for walking and cycling. The site has grassed picnic areas, sheltered barbecues, toilets and parking. The setting is tranquil and forested, with birdlife and interpretive signage along the trail. The dam wall and spillway can be viewed but are not accessible.