
Cotter Dam
Completed in 2013, the Enlarged Cotter Dam (ECD) comprises an 87m high roller compacted concrete dam (RCC) wall built downstream from the old 26m high dam wall, along with two auxiliary dam walls along low-lying adjoining valleys. As of 2019 the ECD remains the highest RCC dam constructed in Australia with a water storage of 78 gigalitres with a 482-hectare catchment. Geovert constructed the 60m deep grout curtain under the full length of the 330m long ECD.
Using a contactor as diverse as Geovert allowed the restricted access drilling inside the steep galleries, foundation grouting, drainage works, depressurization drilling, rock bolting and over 2 years of rock scaling works to be completed using just one competent contractor without having to manage the interface of multiple subcontractors.
Project Overview

Ground Engineering Market Sectors
