期刊名称：Present Environment and Sustainable Development
电子版ISSN：2284-7820
出版年度：2019
卷号：13
期号：1
页码：81-97
DOI：10.2478/pesd-2019-0007
出版社：Walter de Gruyter GmbH
摘要：The main objective of the study was to identify high flood risk zones in AMA. The study also used questionnaires to assess local knowledge on what accounts for the high flood risk in their community. Spatial analysis techniques were used to model flood risk based on the following contributory factors; land cover, soil, drainage density, topography and proximity to rivers. The results show that high flood risk areas covered 46.3km 2 (20%), moderate risk area, 72.9km 2 (31.6%), low risk area 41.5km 2 (18%) and very low risk areas, about 6.7km 2 (2.9%). The high flood risk zones were low-lying areas below 50 meters above sea level and closely associated with poor drainage systems. People perceived not just low-lying areas as a paramount reason accounting for flooding but also very bad waste disposal habit of the public. These offsets the efforts of waste management companies to keep drains free of refuse..
关键词：Geographic Information Systems ; Flooding ; Flood Risk Zones ; Accra Metropolitan Area
