The Croftfield Lane Wetland Rehabilitation - A Diamond in the Rough

A constructed wetland in the heart of North Shore’s industrial Wairau Valley was decommissioned in 2006 to aid in the removal of the invasive Alligator Weed, which had taken hold in the wetland. This provided an opportunity to plan for and design the rehabilitation of an improved wetland that not only met contaminant removal objectives, but also aimed to simplify any ongoing operational considerations regarding weed management, reduce flood risk, improve access, enhance the ecology and provide the community with a park-like experience. This paper will review the site issues and rehabilitation objectives, discuss the landscape-led concept options approach and highlight the method of producing an integrated, multiple-benefit storm water project.