ISSN 2360-7971
Effect of locally available materials and temporal trends on gully rehabilitation in Borodo watershed, central Ethiopia
Obsa Adugna, Ayalnesh Melese, Kalkidan Fikrie, Worku Atlabachew (PhD), and Getamesay Shiwenzu
*Corresponding author: Obsa A | Received: 7/3/2023 | Accepted: 6/4/.2023 | Published: 13//4/2023 |
Abstract: Erosion by water is the most serious form of land degradation process affecting the entire world of which gully erosion is the alarming and appalling stage as compared to other forms of erosion. Gully erosion is a highly visible form of soil erosion that affects soil productivity and restricts land use in Borodo watershed. Understanding the situation, the study was carried out with the aim of evaluating the potential of locally available materials to rehabilitate gullies. The potential of locally available materials to rehabilitate gully were observed on two gullies in the watershed. The total length of G1 and G2 were 105m and 56m. The study revealed that, the introduced practice had brought a vital morphological change over both gullies. Cross sectional area, depth, lip width, and base width of the gully was reduced from 1.44 m2 to 0.9m2 and 1.54m2 to 0.94m2, 0.36m to 0.31m and 0.36m to 0.34m, 5.42m to 4.62m and 5.33m to 3.87m, 2.75m to 1.16m and 3.6m to 1.57m over the period of 2021-2022 for G1 and G2 respectively. The volume of soil deposited across each section also ranges from 69.63 to 111.01 and 35.7 to 86.24 for G1 and G2 respectively. The Volume of deposited soil (V), cross sectional area and gully depth were highly correlated to each other. V is significantly correlated with CSA (r =1) and gully depth (r = 0.99) and (r = 0.95) for both G1 and G2 and respectively. Therefore, treating gullies using locally available material needs to be strengthened for gully bank rehabilitation in the watershed by participating stakeholders
Keywords: Gully Morphology; Soil loss; Gully temporal variability
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Citation: Obsa A, Ayalnesh M, Kalkidan F, Worku A, and Getamesay S,( 2023): Effect of locally available materials and temporal trends on gully rehabilitation in Borodo watershed, central EthiopiaEthiopia. 11(3) Pp 22—29, 2023. |
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