© All Rights Reserved The Crestuma / Lever Dam about 20Km up the river Douro from Porto. The dam was built in 1985 and it measures 470 metre in widthRelated images Looking across Ponte D. Luís to Ribeira at Night Porto - Bishop's Palace and Luis I Bridge Art Nouveau in Porto Clerigos Tower - Porto Praça do Infante Dom Henrique - Porto Igreja dos Clérigos - Interior