Parede da Barragem (Açude Castanhão)

The Castanhão Dam, officially Açude Público Padre Cícero, impounds the Jaguaribe River; construction began in 1995 and ended in 2002, and it was inaugurated on 29 January 2004. The idea for the dam came from the Cunha family, who led the regional oligarchy and owned the Castanhão farm, now almost completely submerged by the reservoir. Filling the reservoir also submerged the old town of Jaguaribara, which was demolished before the water arrived, and its residents were moved to Nova Jaguaribara, the first planned city in Ceará. On a reconnaissance dive next to the dam, in October 2012, a rudimentary fishing net was found completely submerged among the rock formations along the shore, an example of ghost fishing. In the reservoir, aquatic life is modest, but groups of up to 10 tucunarés, small pintados, shrimp and slugs can be seen, as well as a diverse flora.