Cape Foulwind is a New Zealand landmark. The surrounding bays are home to a fur seal breeding colony and the coastal landforms have created a well-known surf break. The escarpment is rich in limestone and up until June 2016, the area had been home to a large cement works. The site, encompassing over 500ha of land dominated by an industrial quarry and native bush was to be sold with a view to transform the quarry into a potential residential and recreational development. The quarry will be allowed to fill with water to create a unique lake environment. CKL was engaged to study the effects of the proposed lake on the surrounding streams and marine environment, and to design weir outlets structures to manage and control water discharge during various annual storm intervals, including 100-year storm events.