RST Environmental Solutions Ltd

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RST imports the Aquadam system from the USA. This system is ideal for diverting streams or for emergency management during flood events. It is a system that is rapid to install and easy to de-establish when finished.

Aquadam are portable dams filled with on-site water that can be installed wherever needed to control, contain or divert water flow. Aquadams consist of two basic components: two water tight inner polyethylene tubes which contain the water and an outer "master tube" made of a heavy duty geo-textile woven polypropylene which holds the inner tubes in contact when filled. The outer and inner tubes combine to form an Aquadam.

To inflate an Aquadam, water is pumped into the two inner tubes. The durable woven outer tube confines the water-inflated inner tubes and prevents them from moving away from each other. The counter friction/ hydraulic pressure between the inner tube and the outer tube, along with the mass and weight of the water, creates pressure and stabilises the Aquadam, even when lateral water pressure is exerted against it.

Due to the inherent flexibility of the materials used in their construction, Aquadams will conform to most surfaces, providing an excellent seal and keeping water seepage to an absolute minimum.

Aquadams come in various height ranges from 300mm through to 5 metres. Standard lengths are 17 metres and 34 metres.

Aquadams have recently been used at the Ruby Bay bypass. Please view the NZTA news letter to get our clients comments.

This system can be purcahsed through RST. Please contact us for more information.


When faced with the problem of removing water from the work area around the new culverts being built on site,project engineer Kevin J Smith knew the solution, and was responsible for the use of an ‘AquaDam' for the very first time in New Zealand.