Dangert 1 Channel, starts 11 km upstream and where it was possible follows the natural wadi bed, after 8.5 km it reaches the refinery area at the north side and finally after another 2.5 km discharges into the sea. Dangert 1 channel, has a trapezoid section, with a variable bed width of 60 to 100 m.

The construction of the channel Dangert 1 capable of conveying the 1 in 1,000 years flow event, was proposed for the flood protection of the Refinery area from the northern catchment.

An embankment formed by compacted suitable excavation materials and protected by riprap is provided at the downstream reach of the channel near the sea outlet.

There are two box culverts provided for the crossing of the existing roads. A box culvert of 22 cells 4m x 3m have been constructed along main asphalt road (Road 32) at CH. 3+980 of the channel Dangert 1 and a box culvert of 12 cells 3m x 2m for the local road at CH. 10+480 of the channel across the major wadi crossing. 2,800,000 m3 of excavation, 90,000 m3m3 of embankment fill, 80,000 m3 of riprap construction, 50,000 m3 of gabion, and 175,000 m3 channel invert protection construction have been performed for this project by SERKA. The project have been accomplished successfully with a consultancy of Renardet S.A. & Partners L.L.C.