Earth Observation-based Damage Assessment of 2018 Flood in Parts of Hadejia-Jama’ are River Basin, Nigeria
International Journal of Environment and Climate Change,
Floods, Landslides, Forest fire, Volcanoes, Hurricanes and Tsunami among others are indeed considered as the most natural hazards that cause loosed of resources which includes human lives. Hadejia-Jama’ are River Valley has a well-known seasonal occurrence of floodings with maximum interval of five years incidents historically. Among these disasters floods especially along the river basin particularly in developing nations like Nigeria became a regular disaster with state of frequent occurrences almost seasonally. This study assessed pre-flood and post-flood nature of floodplain along Hadejia-Jama’ are from Jigawa to Tiga Dam in Kano State. Remotely sensed sentinel 2 satellite data and ALOS Digital Surface Model (DSM) was used for the study. The sentinel images were subjected to image pre-processing activities such as geometric correction and radiometric correction. To focus on the flood plain, a 5 km buffer of the area around Hadejia-Jama’are River Basin from Jigawa to Tiga dam were extracted from the data by using the extract/clip tools in ArcGIS 10.3 software. Findings of the study revealed that dominant land use along the floodplain prior to flood include bare surface, patches of agriculture/vegetation, settlement, water body. The study also revealed that patterns of flood damages vary irrespective of the risk with areas like Dawakin Kudu and Garun mallam were witnessing more flood damages than Miga LGA of Jigawa State. It is, therefore, concluded that Earth observation and its applications are useful tools/methods for flood damages assessment and evaluation as well as a basis for taking proactive steps in mitigating flood hazard along floodplains and another flood prone environment.
- sentinel 2
How to Cite
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