Blowering Dam, Embankment dam in Snowy Mountains region, Australia

Blowering Dam is an ungated rock-fill embankment dam with a clay core on the Tumut River, about 13 km south of Tumut in the Snowy Mountains region of New South Wales. Its wall is 112 m high and 808 m long, and its concrete chute spillway can discharge 2,350 cubic metres per second. The reservoir covers 44.6 square kilometres.

Work on the dam started in 1964 and was completed in 1968 as part of the Snowy Mountains Hydroelectric Scheme, a large postwar infrastructure project. When it was finished, it became one of the key pieces in a network designed to redirect mountain water toward inland farming regions.

The reservoir is popular with fishing communities, and on weekends families gather along its shores to boat, swim, and cook outdoors. The lake has become a natural gathering point for people living in the surrounding valleys.

Several boat ramps and picnic areas are spread around the reservoir, making it easy to explore by water or on foot along the shore. In summer the site gets busy, so arriving early in the day gives you a better chance of finding a good spot.

On 8 October 1978 Ken Warby reached 511.13 km/h on Blowering Reservoir in Spirit of Australia, a boat he designed and built himself. He remains the only person to have travelled on water faster than 300 mph, and the record still stands.