An-Najah Staff

Marj Sanour "al Gharaq" is one of the close karst plain "Polje" which spreads within the West-Bank mountains. The creation of this plain was a result of the cross faults, which took place in contemporary with the Jordan rift valley. The karst process had changed it to a close typical Polje. The geomorphological processes closed the only outlet as a result of the construction of the alluvial fan of Wadi Umm Khurrameyeh and Wadi Sanour, and the differential between the lowest point in the Marj and the highest one of the outlet is 24m. Since its closure, it has become an internal run flow. As a result a temporary lake is created in the center of the Marj whose very existence depends on the quantity of annual rainfall. Consequently, the existence of this lake has posed several risks for the farmers in terms of depriving them of cultivating the winter season and might it extend to summer season. In this research, the geomorphology of the Marj was studied in terms morphogene and morphological units. The problem of the flood was illustrated with all its hydro-climatic and economic dimensions. I have offered a few possible solutions, which are divided into internal and external flow of floods