Identification of flood prone areas in Adigrat town using Boolean logic with GIS and remote sensing technique

The Adigrat town lies in Tigray region of Ethiopia. This region is mountainous and experience semiarid
type of climate. Most of the rainfall occurs in four months of a year, which is June to September.
During this season flood is common natural disaster especially in urban areas. In this paper an
attempt is made to identify flood prone areas in Adigrat town using Boolean logic with GIS and remote
sensing technique. Three parameters were incorporated as landuse type, elevation and slope. Boolean
logic was used as landuse equal to buildup land, elevation less than 2430 m and slope less than 5 degree.
As a result 0.575 km2 was identified severely effected by flood during rainy season.