Located in the municipal term of Almodóvar del Río, in the final stretch of the river Guadiato, very close to the confluence with the river Guadiato, with their 823Hm3 is one of the largest in Andalusia. Make the height of the new dam, completed in 2008, the biggest in Europe. Stand out the presence of two flour mills from the medieval period in operation, restored within the framework of the project of compensatory measures for the dam, which unfolded a tradition linked to the rivers of the countryside in the tour: the grinding of wheat.