JavaScript is disabled for your browser. Some features of this site may not work without it.
| dc.contributor.author | MELKIE, TEGEGNE MELESE | |
| dc.date.accessioned | 2022-12-01T11:17:38Z | |
| dc.date.available | 2022-12-01T11:17:38Z | |
| dc.date.issued | 2022-08 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/14681 | |
| dc.description.abstract | The management of water resources in the study area is a complex issue due to limited data, rapid population growth, dryness and complex physiographic environment. Rainwater harvesting systems (RWH) are a prominent solution to deal with water scarcity by conserving available water resources and the energy needed to deliver water to the water supply systems. The impact of climate change on water resources can be reduced by rainwater harvest is essential to sustainable water management. The identification of suitable sites for RWH is an important step to maximize the water availability, land productivity, and groundwater conservation in semi -arid areas. This study aims to select the optimum sites for different indigenous RWH systems in Gondar Zuria district using Geographic Information Systems (GIS), Remote Sensing (RS) and Multi-criteria Analysis (MCA). The selection criterion in this study is based on biophysical factors as well as socio-economic parameters. These criteria were identified based on literature review and by participating local experts in evaluating the importance of each criterion. The consistency ratio between the experts‘ opinions was evaluated using the pair wise comparison method and a final weight was computed for each criterion. Four RWH systems namely, Terraces, Check-dams, Farm ponds and Spate irrigation are selected. Each RWH system is analyzed separately and the suitability map has been done. The Weighted Linear Combination (WLC) technique was applied in combination of the Boolean technique to generate the final suitability maps for RWH systems in Gondar Zuria district. The results of the suitability maps indicated that a sufficient area of moderate and high suitability is existed in the study area for the RWH systems, particularly very low suitability, low suitability, moderate suitability, high suitability and very high suitability are 188.24km 2 (14%),649.62km 2 (48%),227.64km 2 (17%),277.05km 2 (20%) and 16.46km 2 (1%) respectively. Finally, the results of the sensitivity analysis revealed that developing the suitability maps for potential RWH using relative weights and AHP excel model over analysis are more accurate. Furthermore, it is noticeable from the sensitivity analysis that the rainfall layer is the most sensitive layer among others and inaccuracies in this layer can lead to errors in the identification of the RWH suitable sites. Key words: - Rainwater harvesting, GIS, RS, Gondar Zuria woreda, Water scarcity | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CIVIL AND WATER RESOURCE ENGINEERING | en_US |
| dc.title | INVESTIGATION OF POTENTIAL SITES FOR DIFFERENT INDIGENOUS RAINWATER HARVESTING TECHNIQUES USING GIS AND RS IN GONDAR ZURIA DISTRICT OF AMHARA REGION, NORTH WEST ETHIOPIA | en_US |
| dc.type | Thesis | en_US |
