The objective of this dam is the creation of a reservoir capable of ensuring the following:
• drinking water up to 2030 of a portion of the localities in the Cazas of Batroun and Koura;
• water supply to certain industries in the region;
• irrigation of agricultural lands located mostly at North of Nahr El-Jawz with 1000 ha exploitable area.
The site of Mseilha Dam is located on Nahr El-Jawz in its downstream part approximately at 400 m upstream of Qal'at El-Mseilha in the Caza of Batroun, at the East of new Batroun – Chekka road. The development includes:
• a 400 m long and 35 m high dam;
• a gallery of temporary diversion on the left bank of 255 m long and 4 m in diameter with D-section transformed at the definitive stage at the bottom drain and ensuring the path of the supply line to a treatment plant;
• a spillway consisting of a circular well of 27 m in height and 10 m in diameter and an evacuation gallery 131 m long and 9 m in diameter;
• an inlet with three levels installed on the left bank