The Matammah area is located in north central Sudan on the western bank of the river Nile. The locality covers the
south western part of river Nile state. The study area covers about 1855Km 2
. The hydrogeological boundary of the study area
are: khor wedi in the north, river Nile in the east, Sabaloka basements complex from the south, central Africa shear zone from
the west. The land surface in general is largely a plain of low relief, Individual inselbergs (or jebels) occur sporadically.
Drainage pattern in the study area is the Dendritic pattern while the area is covered by sandy soil, which classified into two
main groups including residual and transported soils .