Evaluation of the Impact of Land Use/ Land Cover Changes on The Floods of Addis Ababa City
| dc.contributor.advisor | Hamere Yohannes | |
| dc.contributor.author | Andualem Bogale | |
| dc.date.accessioned | 2023-12-14T14:51:17Z | |
| dc.date.available | 2023-12-14T14:51:17Z | |
| dc.date.issued | 2023-07 | |
| dc.description.abstract | Land use and land cover (LULC) changes are continuous, and both natural and man-made environments drive it over time. These changes are affecting the hydrological system. Flooding is one of the environmental problems in Addis Ababa city. This research proposal aims at evaluating the spatiotemporal changes of LULC changes and their impact on flooding in Addis Ababa city., Hence to investigate this, the present study adopt a supervised classification technique and change detection techniques. This study uses Remote sensing (RS), geographical information system (GIS) and Earth Resource Data Analysis System (ERDAS) techniques and software. Accordingly, Satellite images were utilized to monitor LULC changes from year 1992-2021 for the five identified LULC classes. The finding of the study showed that, the built-up area increased from 13,013.04ha in 1992 to 34398.05ha in 2021, barren land decreased from 14,973.75ha to 6950.25 ha, agricultural Land decreased from 13114.15 ha to 3993.97 ha, Forest decrease from 4688.16 ha to 1924.90 and a slight change occurred in water body decrease from 6161.07ha to 4683.00 ha. Build up area exhibited the most noticeable changes (25.05 % to 66.21%,) from 1992 to 2021, which came from agricultural land and barren land. The flood hazard analysis was computed using the multi-criteria evaluation (MCE) technique by selecting six flood contributing factors (slope, soil type, elevation, land use/land cover, drainage density, and Rainfall). Then a flood hazard map was developed using the Analytical Hierarchy Process (AHP) and further fine-tuned with sensitivity analysis for rating the weighted percentage each factor in contributing flood aggravation. The study revealed that rain fall (26%), drainage density (23%) and LULC (20%) significantly impact for flood hazard generating. While, elevation (12) and slope (12%) have a medium impact whereas soil type showed low impacts in flood contributing process. The developed flood hazard map from this research work showed that a high flood hazard has imposed by the flood in the west and south west of the study area. This study's results provide valuable information for the city administration on the identified flood risk-prone locations for implementing emergency plan and future long term flood mitigation measures. It also provides useful knowledge for policy-relevant land administration for future development related to land use plan associated with flood. | |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/996 | |
| dc.language.iso | en_US | |
| dc.publisher | Addis Ababa University | |
| dc.title | Evaluation of the Impact of Land Use/ Land Cover Changes on The Floods of Addis Ababa City | |
| dc.type | Thesis |