No.1 Drain is a 480-metre drain located in the Shirley Links Golf Course. The drain suffered extensive earthquake damage. Further failure could result in an increased flood risk and repair was needed to ensure the drain kept functioning.
No.1 Drain in Shirley, which runs into Horseshoe Lake, was badly damaged in the earthquakes.
The once unsightly concrete drain has now been transformed into a naturalised stream, complete with ponds and floating wetlands(external link), bringing reduced flood risk for properties upstream, and improved habitat for aquatic life.
The floating wetlands are densely bedded with plants, which will send their roots into the water and take up nitrogen, phosphates and heavy metals, improving the water quality in Horseshoe Lake and the Avon River.