The Upper Yarra Reservoir is located east of Melbourne, Victoria, Australia, beyond Warburton within the locality of Reefton.

[2][3] Approval to construct Upper Yarra Reservoir was granted in the early 1940s but due to World War II work did not start until 1948.

[4][5][6] When the Upper Yarra Reservoir was completed the total storage capacity of Melbourne's system was tripled to nearly 300,000 megalitres.

[1] Upper Yarra Reservoir has a capacity of 200,000 ML (7.1 billion cu ft) and was completed in 1957,[7] initially for the purpose of preventing flooding downstream.

[9] The recorded water storage level in the dam in 26 September 2021 was 186,060 megalitres, equivalent to being 92.8 per cent full.