Commenced in 1928, completed in 1935, and upgraded in 1971, Wyangala Dam is a major reservoir situated below the confluence of the Lachlan and Abercrombie rivers, located approximately 38 km (24 mi) upstream, east of Cowra.
The dam was built by the New South Wales Water Conservation & Irrigation Commission to supply water for irrigation, flood mitigation and potable water for the towns of Cowra, Forbes, Parkes, Condobolin, Lake Cargelligo, Euabalong and Euabalong West.
The dam also provides water for a far larger area and operates in conjunction with Lake Brewster and Lake Cargelligo, to supply water to the lower Lachlan valley customers.

The dam wall constructed with 3,580 m³ (126,000 cu ft) of rockfill and a clay core is 85 m (279 ft) high and 1,370 m (4,490 ft) long.
The maximum water depth is 79 m (259 ft) and at 100% capacity the dam wall holds back 1,220,000 ML (43,000×10⁶ cu ft) of water at 379 m (1,243 ft) AHD.
The surface area of Lake Wyangala is 5,390 ha (13,300 acres) and the catchment area is 8,300 km² (3,200 sq mi).
The eight radial gates and concrete chute of the spillway are capable of discharging 14,700 m³/s (520,000 cu ft/s).
A A$43 million upgrade of facilities commenced in 2009 and, when completed by 2016, is expected to result in the raising and locking of the spillway radial gates; raising of the spillway chute wall; and raising of the parapet wall crest.

The Wyangala Dam is the second oldest dam built for irrigation in New South Wales and was one of the last dams in the state where a railway or tramway system for construction purposes was utilised.
It is the only dam on the Lachlan River system, which feeds the Murrumbidgee River, and in turn feeds the Murray River.
Commenced in 1928, completed in 1935, and upgraded in 1971, Wyangala Dam is a major reservoir situated below the confluence of the Lachlan and Abercrombie rivers, located approximately 38 km (24 mi) upstream, east of Cowra. The dam was built by the New South Wales Water Conservation & Irrigation Commission to supply water for irrigation, flood mitigation and potable water for the towns of Cowra, Forbes, Parkes, Condobolin, Lake Cargelligo, Euabalong and Euabalong West. The dam also provides water for a far larger area and operates in conjunction with Lake Brewster and Lake Cargelligo, to supply water to the lower Lachlan valley customers.
The dam wall constructed with 3,580 m³ (126,000 cu ft) of rockfill and a clay core is 85 m (279 ft) high and 1,370 m (4,490 ft) long. The maximum water depth is 79 m (259 ft) and at 100% capacity the dam wall holds back 1,220,000 ML (43,000×10⁶ cu ft) of water at 379 m (1,243 ft) AHD. The surface area of Lake Wyangala is 5,390 ha (13,300 acres) and the catchment area is 8,300 km² (3,200 sq mi). The eight radial gates and concrete chute of the spillway are capable of discharging 14,700 m³/s (520,000 cu ft/s). A A$43 million upgrade of facilities commenced in 2009 and, when completed by 2016, is expected to result in the raising and locking of the spillway radial gates; raising of the spillway chute wall; and raising of the parapet wall crest.
The Wyangala Dam is the second oldest dam built for irrigation in New South Wales and was one of the last dams in the state where a railway or tramway system for construction purposes was utilised. It is the only dam on the Lachlan River system, which feeds the Murrumbidgee River, and in turn feeds the Murray River.
Wyangala Dam