The design of dams and large hydraulic structures made a significant contribution to Sogreah’s international reputation. Artelia’s teams are hence capable of taking on highly technical and increasingly complex projects. Designing and building dams to generate hydropower, control river flows, open up waterways to shipping and create lakes and reservoirs is one of Artelia’s main fields of expertise. The company has honed these skills through working on all types of structure (arch, concrete gravity, RCC, rockfill and earth dams) and the associated facilities (flood spillways, siphons, tunnels, feed chambers, vortex shafts and stilling basins). Artelia helps to design exceptional structures such as the Bunji hydropower scheme (Pakistan, 7000 MW). In Oman, to prevent a recurrence of the disastrous effects of cyclone Gonu (2007), Artelia is building a series of 12 flood-damping dams, one of which is 65 m high, to protect the capital, Muscat. Artelia is also responsible for the working design studies for Rizzanese dam in Corsica.