In order to develop the flood model, understanding
and determination of flood causative factors are crucial.
These factors are selected based on the knowledge
acquired from collected during our recent on-site
survey. A public hearing was organized and 100 local
administrative governors, sub-districts headmen, village
chiefs, academic and local representatives in the
area at risk were participated [2]. This information
formed the bases of the overlay functions, constituting
to nine relevant factors, which were sampled and
analyzed on a reference frame, i.e., Digital Elevation
Model (DEM) digitized from elevating contours [2, 4].