Owned and operated by State Water Corp, Blowering Dam is the sixth largest embankment dam and ninth highest in Australia. The main construction works completed by MacMahon's consisted of a parapet wall on top of the dam wall crest and raising the spillway training walls.

Geovert completed several packages of work during the safety upgrade firstly installing rock bolts for the spillway strengthening and widening and secondly post tensioned anchors through the crest and new wing walls.

The work on the crest wall and spillway was proven to be successful immediately after the completion of the works to raise the crest as the region experienced severe rainfall in December 2010 resulting in the dam exceeding its capacity.