The Chanza Canal, running from the Chanza Reservoir on the Spain/Portugal border near Pomarão, provides a water supply to Huelva. A few km south of El Granado, the Canal goes into a piped section on a steep downhill grade. This view shows the piped section, as indicated by the concrete structures, after crossing under the HU-4402 Sanlúcar de Guadiana - El Granado road.