Abstract:
Flood events are recognized to be one of the most among the most catastrophic disaster in the world,
with a consequential loss of lives, goods, and services. Factors such as rapid urbanization, lack of
proper infrastructure development, insufficient consideration of the environment, and the effect of
climate change have made floods even more destructive, particularly for developing countries that
lack the means to respond appropriately during such events. The impacts of flood disasters on people
and the local economy are more severe in urban areas than in rural areas. Niamey has experienced
frequent devastating flooding events in recent times, particularly in 2020. For this reason, producing
a flood map for Niamey is crucial to see which places will be affected. This study aims to map
potential flood areas after the 2020 flash flood using unsupervised classified sentinel 1 SAR images
from the European Space Agency. For the research purpose, we used the Digital Earth Africa
Sandbox platform to get and analyze the result. The inundated area map demonstrates that the flood
affected approximately 149.541 km2, the Built-up area highly prone to flooding: 18.325 km2, the
cropland area highly prone to flooding: 26.252 km2, the Built-up area medium prone to flooding:
79.318 km2, Cropland area medium prone to flooding: 13.26 km2.
Description:
A Publication submitted to the West African Science Service Centre on Climate Change and Adapted Land Use, the Université de Lomé, Togo in partial fulfillment of the requirements for the requirements for the degree of Doctor of Philosophy Degree in Climate Change and Disaster Risk Management
