Pejar Dam, Embankment dam in Southern Tablelands, Australia.

Pejar Dam is an earth and rock embankment dam on the Wollondilly River in the Southern Tablelands of New South Wales, with a wall around 26 meters high. It holds back a large freshwater reservoir that supplies drinking water to the city of Goulburn.

Pejar Dam was completed in 1979 by the New South Wales Department of Works for the Goulburn City Council, built to augment the city's potable water supply. It is one of three storage facilities serving Goulburn, alongside Sooley Dam and Rossi Weir. In May 2005 drought brought storage down to 10% of capacity, and on 21 April 2006 the dam was declared officially empty; it stayed dry until heavy rain in June 2007.

Pejar Dam is stocked with rainbow and brown trout, drawing trout anglers to its shores. Powered and unpowered boating is permitted, with access via a gravel launch ramp, and the reservoir suits kayaks and canoes. Swimming and camping are not allowed. Barbecues, picnic shelters, untreated water and rubbish bins are provided for day visitors.

Powered and unpowered boating is allowed on the reservoir, with access via a gravel launch ramp; kayaks and canoes are suitable. Swimming and camping are not permitted. Barbecues, picnic shelters, untreated water and rubbish bins are provided.

The dam uses an uncontrolled spillway, meaning that when water levels rise high enough, excess flow simply spills over on its own without any gates or valves. This design keeps operations simple but also means that heavy rain events can drain a noticeable share of the stored water before levels stabilise.