The works comprise :
a) an embankment dam 400 m long and 35 m high,
b) a temporary diversion tunnel on left bank 255m long and 4m diameter with D cross section transformed at final stage in bottom outlet and assuring the passage of a water supply pipe to a treatment station (not included in this project)
c) a circular spillway shaft 27m high and 10m diameter as well as a tail race tunnel 131 m long and 9m diameter.
d) a three levels water intake structure on left bank.