The solution, designed by our team in Dubai, is one of the largest integrated drainage tunnels in the region. The Dubai Deep Tunnel Storm Water System will drain 40% of the entire urban area of the city. It will serve the whole of Dubai South, which is home to Dubai’s new airport and the EXPO 2020. The system has five elements, a groundwater and stormwater collection network; a 10km, 10m diameter, 45m deep tunnel; a holding pond; high efficiency pumping station; and a sea outfall.