Our dam histories

Our dam histories

We manage these major water supply dams - each with their own unique and fascinating story.

Click to find out more about the history behind:

Avon Dam

Avon is one of four dams that make up the Upper Nepean water supply scheme south of Sydney on the Illawarra Plateau.


Brogo Dam


Carcoar Dam

Lower Cascade Dam

Cascades Dam

The Upper, Middle and Lower Cascade dams near Katoomba, built between 1908 and 1938, supply the nearby Cascade water filtration plant that supplies the middle and upper Blue Mountains

Cataract Dam

Cataract Dam is one of the oldest and most picturesque dams in Sydney. At the time of its construction from 1902 to 1907, Cataract Dam was the biggest engineering project in Australia and the fourth biggest in the world.


Copeton Dam

Cordeaux Dam

Cordeaux is one of four dams that make up the Upper Nepean water supply scheme south of Sydney on the Illawarra Plateau. Remarkable for its Egyptian inspired architecture, a visit to Cordeaux Dam is like stepping back in time.

Fitzroy Falls Reservoir

Fitzroy Falls and Wingecarribee reservoirs have relatively small catchment areas totalling only 70 square kilometres. Water pumped from the Shoalhaven Scheme is mostly collected from the Tallowa Dam catchment of 5,750 square kilometres.


Glenbawn Dam

Glennies Creek

Glennies Creek Dam

Greaves Creek Dam

Greaves Creek Dam

Greaves Creek Dam near Blackheath was the last of the dams built as part of the development of the upper Blue Mountains


Keepit Dam

Lake Medlow Dam

Lake Medlow Dam

Believed to be one of the thinnest dam walls in the world when completed in 1907, Lake Medlow Dam was the first of the dams built as part of the development of the upper Blue Mountains.


Lostock Dam

Nepean Dam

Nepean Dam was the last and smallest of the four dams constructed to collect water from the Illawarra Plateau south of Sydney.


Oberon Dam


Pindari Dam

Prospect Dam

Located about 35 kilometres west of Sydney, Prospect Reservoir was completed in 1888 as part of the Upper Nepean Scheme to supply Sydney with water collected from the weirs on the Illawarra Plateau south of the city.


Rydal Dam

Split Rock

Split Rock Dam

Tallowa Dam

Tallowa Dam is the centrepiece of the Shoalhaven system which provides water to the Shoalhaven and Southern Highlands regions, and a back-up to the Sydney and Illawarra water supplies.


Toonumbar Dam

Warragamba Dam

Warragamba Dam supplies water to more than 3.7 million people living in Sydney and the lower Blue Mountains. Just a one hour drive from Sydney's CBD, the dam is a popular place to visit and picnic.


Windamere Dam

Wingecarribee Reservoir

The reservoir supplies the nearby towns of Bowral and Mittagong, and is part of the Shoalhaven Scheme which during drought also tops up Sydney and Illawarra water supplies. Goulburn can also be supplied with water from Wingecarribee Reservoir.

Woronora Dam

Woronora Dam supplies water to the Sutherland Shire in Sydney's south, and to the northern suburbs of Wollongong. The grounds are unusual in retaining workers' cottages and old platforms, plant and machinery used in the dam's construction in the 1930s.


Wyangala Dam

For the listing on the heritage and conservation register see: Cataract Dam - Cordeaux Dam - Medlow Dam - Nepean Dam - Woodford Dam - Woronora Dam.

You can also find on the register other water supply infrastructure: Woronora-Penshurst Pipeline or the Upper Nepean Scheme and Warragamba Supply Scheme.

Monday 25 March
1,480,579 ML
2,581,850 ML
10,180 ML
1,455 ML
8,739 ML
Monday 25 March