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| dc.contributor.author | Marew, Getie | |
| dc.date.accessioned | 2023-06-16T07:00:05Z | |
| dc.date.available | 2023-06-16T07:00:05Z | |
| dc.date.issued | 2023-03 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/15365 | |
| dc.description.abstract | Zorit River is located in South West of Guna Mountain that is more of highly affected by runoff. The increase in the cultivation of the highland areas of Zorit river watershed increase degradation and erosion of upper parts of the river and also since there is different land use practice on the upper part of the watershed which causes not only degradation but also it causes shitting of river direction. The main objective of the study is assessing channel morphology changes in Zorit River by evaluating the impacts of land use land cover change (width, and channel length), identify the main cause of channel morphology change in the river reach and indicate the downstream plan form Zorit River. To see the change from the time series of the past river meanders and changes Google earth pro was used. To compare the plan forms of Zorit River Current River cross sections were taken at different intervals from Google earth and the past cross sections were developed from the old topographic map of the study area. For the data preparation Environment for Visualizing Images (ENVI 5.1) and Arc- GIS 10.8 were used. The result of land use /land cover classification indicated that the forest land, shrub land and bare land declined by 0.7 %, 7.4% and 1 % from 1990 to 2008, 2%,13.1% and 3.2% from 1990 to 2020 and 1.3%,5.7% and 2.2% from 2008 to 2020 while agricultural land and built-up area was increased by 8.8 % and 0.4 % from the year 1990 to 2008 ,17.9% and 0.4% from 1990 to 2020 and 9.1% and 0.1% from 2008 to 2020 respectively. The channel shifts its direction 136 m to the left bank (east ward direction) and to the right bank 145.27 m (westward direction). The Sinuosity index of Zorit River is 1.03, 1.02 and 1.03 in the year 1990, 2008, and 2020 between reach 1 and 2 respectively. This revealed that the three years of river center line shows straight river channel pattern downstream of the junction of the new river course to the past one. Hence, land use/ land cover change and the increase in sinuosity index could affect the channel morphology without manmade (hydraulic) structures like dams and bridge. Key words: ‘Plan form change, GIS, watershed, Morphology, Zorit River’ | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | Civil and Water Resources Engineering | en_US |
| dc.title | ASSESSMENT OF LAND USE LAND/ COVER AND CHANNEL MORPHOLOGY CHANGE IN THE UPPER REACHES OF ZORIT RIVER, EAST ESTIE DISTRICT, SOUTH GONDAR ADMINISTRATIVE ZONE, ETHIOPIA | en_US |
| dc.type | Thesis | en_US |
