A new piano key weir (PKW) dam has been commissioned by the Department of Water and Sanitation (DWS) at the Hazelmere dam, in the Mdloti river in KwaZulu-Natal. The commissioning of the dam followed the successful raising of the dam wall by 7 m, from 86 m to 93 m, which included the construction and retrofitting of a PKW onto an existing dam spillway structure and the installation of 83 rock anchors, as well as foundation grouting and other minor related works.
