Geomorphic Assessment of Floods within the Urban Environment of GbaweMallam, Accra.

Abstract

This study examined urban geomorphic conditions that lead to flooding in
urban areas of Gbawe and Ma lam. The main objective of the study was to
identify the geom01phic causes of urban flooding. The study used ArcGJS
analysis to present the results on land use change. Information on
geom01phic and geological characteristics, rainfall pattern and humaninduced activities and their impact on the environment were examined.
The result of the research indicated that Ma lam Junction, Abease and
Gbawe-Zero Road are areas with the highest vulnerability to flooding. The
main input to flooding is rainfall, with the heaviest ranging between 200 and
500mm, and occurring from May-July and August-Octobe1: Relief,
geo11101phic factors, the urbanization of streams, the drying up of wetlands,
the elimination of vegetation cover as well as deficient drainage networks
and waste disposal problems are the factors that aggravate flooding in the
study area. Some major suggestions were made for effective land use and
land management