The project includes the Mesochora, Sykia, Mouzaki and Pyli Dams along with a 17.4 km (10.8 mi) long channel.

The idea for an Acheloos to Thessaly diversion project was first envisioned in the 1930s but a lack of funding precluded construction.

Over the next several years there was a series of legal battles that led to construction stalling, most recently in 2005.

Supporters call on the benefit to the lucrative cotton crops it will help irrigate and the dam's planned 162 MW hydroelectric power plant.

[3] The Mesochora Dam was completed in January 2001 but the reservoir has yet to be filled and the power plant has subsequently not been commissioned due to legal battles.