Burrinjuck Dam, Gravity dam near Yass, Australia.

Burrinjuck Dam is a concrete and granite structure spanning across the Murrumbidgee River that holds a large body of water for the region. The dam sits in a steep-sided valley, with the water level rising significantly behind the barrier to supply surrounding areas.

Construction began in 1907 and continued through World War I, with the work finishing in 1928. At that time, the project represented a major engineering achievement for water supply and agricultural development in the region.

The dam was called Barren Jack until about February 1911, an English rendering of the Aboriginal name of the locality; the current spelling Burrinjuck followed. The names Barren Jack Dam and Barrenjack are still used. The reservoir it holds is named Lake Burrinjuck.

The dam wall stands about 60 km south-west of Yass, reached from the Hume Highway side via Burrinjuck Road; the crest is closed to public vehicles, so viewing is from the reservoir shores and surrounding ridges. The site lies at roughly 628 m above sea level in hilly country, and the Yass and Goodradigbee rivers feed the lake behind the wall.

The name Barren Jack, used until about February 1911, was a corruption of the Aboriginal name of the locality. A 2 ft narrow gauge railway ran some 45 km from Goondah on the Main Southern Line to bring materials to the site, taking about two hours and twenty minutes over grades of 1 in 30.