The dam provides approximately 30% of Southern Shoalhaven’s drinking water supply and has a reservoir capacity of 1,900 mega litres. Porters Creek Dam is 11 kilometres west of Lake Conjola in Morton National Park.
Construction of the Porters Creek Dam remediation was completed in November 2016 with Shoalhaven Water successfully delivering this critical project on time and under budget. The upgrade was engineered by Gutteridge Haskins and Davy (GHD) and constructed by Leed Engineering and Construction.
The construction work involved the batching and pouring of 4,500 cubic metres of concrete on site to form the new buttress type dam wall. A stilling basin was constructed to control the velocity and turbulence of water entering the downstream waterway, and a sophisticated survey network was established to monitor any movement in the dam wall during construction. The network remains in place for future monitoring of the wall. See a timelapse of the Porters Creek Dam upgrade in the Related Links panel to the right.
Following some dry weather the rain finally arrived in March 2017 and the dam proceeded to fill, then on 18 March the new dam had its first spill. You can view footage of the first water over the wall in our Related Links to the right.
In commemoration of this historic event a time capsule has been placed onsite with items including project schematics, a time lapse video of the project unfolding, drone footage of the local area, and general merchandise of the day including a magazine showcasing the Shoalhaven.
Fun Fact - A young 17-year-old named Laurie Andrew started his working life at that time as a trainee surveyor with GHD on the original dam project. Fifty years later that same Laurie Andrew works for Shoalhaven City Council and acted as Council’s site supervisor for the upgrade. Mr Andrew said “back in 1967 just getting to the dam was a hassle and to get from one end of the bush to the other you carried a brush hook and an axe”.
Project Photo albums