Technical Study Of Hydro-Agricultural Development Of The Thresholds In Two (02) Lots: -Lot 1: Technical Study Of Hydro-Agricultural Development Of The Seuil Irrara On Oued Ziz, (Sefalat Territorial Municipality – Errachidia Province). -Lot 2: Technical Study Of Hydro-Agricultural Development Of Oued Ziz (Territorial Municipality Er-Rteb – Province Of Errachidia).