Quantitative analysis of morphometry on Ribb and Gumara watersheds: Implications for soil and water conservation

Asfaw, Daniel; Workineh, Getachew

doi:10.1016/j.iswcr.2019.02.003

Cited by 110 publications

(41 citation statements)

References 35 publications

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“…Strahler's 1964a, b ordering system was adopted for this study due to its simplicity and has been used in several studies (Dubey et al 2015;Mustafa et al 2016;Resmi et al 2019;Asfaw and Workineh 2019;Arabameri et al 2020).…”

Section: Linear Parametermentioning

confidence: 99%

“…Higher stream order is linked with the greater ejection of water, sediment, and nutrient (Hajam et al 2013). The drainage pattern of the upper Benue River watershed was identified to be dendritic developed due to variation like the terrain where the rivers flow and the underlying rock structure (Ritter et al 2002;Asfaw and Workineh 2019). The first stream orders are usually numerous and short and they emanate from the hilly and ruggedly mountainous landscape of the watershed, while the seventh stream order which is the principal river of the watershed is found in the plain or valley.…”

Section: Linear Parametermentioning

confidence: 99%

“…The Dd for the entire watershed is 0.21 km/km 2 which is low and that implies that the potential for surface runoff is low and infiltration capacity is high depending on precipitation intensity. A low Dd indicates dense vegetation, and the presence of permeable rocks with low relief (Biswas et al 2014;Asfaw and Workineh 2019).…”

Section: Drainage Density (Dd)mentioning

confidence: 99%

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Morphometric analysis and prioritization of upper Benue River watershed, Northern Nigeria

et al. 2021

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The upper Benue River watershed is undergoing remarkable modifications due to man-made and natural phenomena. Hence, an evaluation is required to understand the hydrological process of the watershed for planning and management strategies. This study aimed to assess the morphometric characteristics and prioritize the upper Benue River watershed. The boundary of the watershed and sub-watersheds, as well as stream networks, was extracted from the digital elevation model (DEM) coupled with hydrological and topographic maps. Twenty-eight morphometric parameters under three categories, i.e. linear, areal, and relief aspects were computed and mapped. Findings from the study revealed that the watershed is a seventh stream order system characterized by a dendritic drainage pattern. The result also showed that 4821 streams were extracted with a cumulative length of 30,232.84 km. The hypsometric integral of the watershed was estimated to be 0.22, indicating that it is in the old stage. In the prioritization of the watershed, the morphometric variables were utilized to calculate and classify the compound factor. The result showed that sub-watersheds 12, 16, 18, 24, 26, and 27 were ranked as very high priority for which conservation measures are required to mitigate the risk of flood and erosion. The outcome of this study can be used by decision-makers for sustainable watershed management and planning.

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Section: Linear Parametermentioning

confidence: 99%

Section: Linear Parametermentioning

confidence: 99%

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Morphometric analysis and prioritization of upper Benue River watershed, Northern Nigeria

et al. 2021

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“…It requires soil conservation measures such as plantation, step farming in hilly area and construction of ponds, check dams to reduce the impact of this problem [4]. Drainage basin which transports the eroded soil through water to a common outlet can be considered as a unit by policy-makers and planners to execute the soil conservation measures [5].…”

Section: Introductionmentioning

confidence: 99%

Watershed prioritization of Upper Kosi Watershed based on soil erodibility computed through TanDEM-X DEM and TOPSIS-AHP ensemble model

Bhardwaj

Bohra

2020

Proceedings of 1st International Electronic Conference on Applied Sciences

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In recent times, soil erosion has become one of the major environmental issues considering large scale anthropogenic activities and frequent extreme weather events globally. These activities and events cause the wearing away of top soil, initiating loss in agricultural land, and triggering disasters like landslides in the hilly regions. So, such regions demand soil conservation measures such as plantation, and construction of check dams. Due to limited resources in developing countries like India, prioritization of land-based on susceptibility to soil erosion makes the implementation of these measures efficient. In the present study, the openly accessible TanDEM-X 90 m DEM and TOPSIS-AHP ensemble model are used for prioritization of Upper Kosi Watershed based on soil erodibility. This watershed having fifth (5th) order perennial Kosi river is a showcase for different landscapes, biodiversity, micro-climate, and hydrogeology. TanDEM-X DEM is preprocessed for stream network generation and catchment delineation which is further used for extraction of 10 morphometric attributes (MAs) of each sub-watershed. AHP model is used for calculating the weights of MAs. AHP model concludes that Watershed slope, Stream frequency, and Drainage density play a greater role in soil erosion as compared to other MAs. Morphometric parameters and its weightage is utilized in the execution of the TOPSIS model to calculate the closest coefficient for each sub-watershed. Further, these closest coefficient is classified into low (0.147-0.167), medium (0.167-0.326), and high (0.326-0.794) susceptible zones for prioritization of sub-watershed based on the geometric mean method. This study highlights that Upper Kosi watershed contains 4.73%, 38.79%, 56.48% of its area in high, medium, and low susceptible zone respectively. The result can assist the decision-makers and planners in choosing suitable regions depending on the available resources for conservation measures in Upper Kosi watershed.

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“…It refers to the level of smoothness and roughness of the basin 28 surface and its vulnerability for soil erosion. High ruggedness values indicate areas with uneven topography29 and sensitive to soil erosion(Strahler, 1954;Asfaw and Workineh, 2019).…”

mentioning

confidence: 99%

Statistical approach of factors controlling drainage network patterns in arid areas. Application to the Eastern Anti Atlas (Morocco)

Bouramtane

Yaméogo

Touzani

et al. 2020

Journal of African Earth Sciences

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Quantitative analysis of morphometry on Ribb and Gumara watersheds: Implications for soil and water conservation

Cited by 110 publications

References 35 publications

Morphometric analysis and prioritization of upper Benue River watershed, Northern Nigeria

Morphometric analysis and prioritization of upper Benue River watershed, Northern Nigeria

Watershed prioritization of Upper Kosi Watershed based on soil erodibility computed through TanDEM-X DEM and TOPSIS-AHP ensemble model

Statistical approach of factors controlling drainage network patterns in arid areas. Application to the Eastern Anti Atlas (Morocco)

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