Zerrar Dam, Morocco

The Zerrar dam in Morocco was built by the Société générale des travaux du Maroc (SGTM) between 2009 and 2013.

Its purpose is to deal with flooding, frequent in the region of Essaouira, and to supply about 18 million m3 of drinking water annually. The reservoir has a total volume of 65 million m3.

The Zerrar dam rises 60 m high above the bed of the river Ksob. It is 418 m long, with a crest of 8 m. The installation includes a spillway, which is 40-120 m wide and 285 m long, a 10 m wide outlet gate, and a 8.5 m high concrete gallery under the dam.

HeidelbergCement’s subsidiary Ciments du Maroc supplied 60,000 tonnes of low alkali cement for this project.