The Kopuatai Peat Dome is a large peatland complex on the Hauraki Plains in the North Island of New Zealand. It consists of two raised domes, one in the north and the other in the south, that are up to three metres higher at the center than at the edge. The wetland contains the largest intact raised bog in New Zealand and was listed under the Ramsar Convention in 1989 as a Wetland of International Importance. Most of the wetland is ombrotrophic, meaning it receives water and nutrient inputs solely from rain and is hydrologically isolated from the surrounding canals and rivers. Locally, a popular misconception persists that water flows from the nearby Piako River into the bog and that the wetland acts as a significant store for floodwater.