Corin Dam is an earth and rockfill embankment dam located on the Cotter River within Namadgi National Park, approximately one hour from Canberra in the Australian Capital Territory. Constructed in 1968 and upgraded in 2016, it sits at a top water level of 955.54 metres above sea level and holds a storage capacity of 70,900 million litres, fed from a catchment area of approximately 197 square kilometres — roughly 2.5 times the volume of Lake Burley Griffin.

Paddling, boating, swimming, and fishing are all explicitly prohibited at Corin Dam. The reservoir serves as a drinking water source for Canberra, and these restrictions exist to prevent contamination of the water supply. There are no access points for watercraft, and this prohibition applies to all recreational water activities on the reservoir.

For those visiting the area by land, there is a small picnic area and toilet facilities on the far side of the dam wall at the end of Corin Road. Visitors can drive across the dam wall and access a small viewing platform up a set of steps just before the crossing, which provides views over the reservoir. Walking trails depart from the dam car park, including a route to Mount Gingera (1,857m), a 20.4-kilometre out-and-back hike. The upper Cotter River catchment is described as being in pristine condition, contributing to the high water quality flowing into the reservoir.