Geospatial and AHP Approach Rainwater Harvesting Site Identification in Drought-Prone Areas, South Gonder Zone, Northwest Ethiopia

Yegizaw, Endalkachew Sisay; Ejegu, Mulualem Asfaw; Tolossa, Asirat Teshome; Halefom, Afera; Andualem, Tesfa Gebrie; Tegegne, Melak Abebe; Walle, Workie Mesfin; Shibeshie, Solomon Enyew; Dirar, Tiku Melak

doi:10.1007/s12524-022-01528-5

Cited by 10 publications

(17 citation statements)

References 36 publications

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“…Most of the highly preferable lands are located in the lowland areas of the watershed, while the moderately fit areas are found in all parts of the watershed. Similar studies were conducted by Adham et al (2018), Muleta et al (2022), andYegizaw et al (2022), and all the studies agreed more runoff can be harvested from the watersheds with high drainage densities as compared to watersheds with small drainage densities.…”

Section: Land Use Land Cover (Lulc)supporting

confidence: 66%

“…As shown in the overlaid map Figure 5, the northern, northeastern, and middle watershed parts are highly suitable while the small portion of the watershed near the outlet point is not suitable for RWH development. The sensitive parameters obtained in this study were aligned with the study carried out by Ammar et al (2016), Ejegu and Yegizaw (2020), Ibrahim et al (2019), Maina andRaude (2016), andYegizaw et al (2022).…”

Section: Weighted Overlay Of Factorsmentioning

confidence: 61%

“…The water potential that could be obtained from a specific watershed is calculated from surface runoff data (Buraihi & Shariff, 2015). The runoff depth is determined using the Soil Conservation Service Curve Number (SCS-CN) method (Yegizaw et al, 2022).…”

Section: Land Use Land Cover (Lulc)mentioning

confidence: 99%

“…The remaining 3.7% (41.52 km 2 ) is covered by bare land and water bodies with a suitability rating of highly suitable and preferable land use land cover types for rainwater harvesting development. Al-Ardeeni (2015) and Yegizaw et al (2022) suggested that utilizing the bare lands and water bodies for rainwater 2019) also employed the same suitability classification in their studies.…”

Section: Land Use Land Cover (Lulc)mentioning

confidence: 99%

“…While, Al-Ardeeni (2015) selected only the factors of slope, LULC, soil texture, and rainfall. Slope, LULC, soil texture, soil depth, rainfall, and lineament density were also used by Ejegu and Yegizaw (2020) and Yegizaw et al (2022). No research was conducted considering all the factors selected in the present study.…”

Section: Introductionmentioning

confidence: 99%

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Identification of Suitable Rainwater Harvesting Sites Using Geospatial Techniques With AHP in Chacha Watershed, Jemma Sub-Basin Upper Blue Nile, Ethiopia

Gebremedhn,

Getahun,

Moges

et al. 2023

Air, Soil and Water Research

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Rainfed agriculture in Ethiopia has failed to produce enough food, to achieve the increasing demand for food. Pinpointing the appropriate site for rainwater harvesting (RWH) have a substantial contribution to increasing the available water and enhancing agricultural productivity. The current study related to the identification of the potential RWH sites was conducted at the Chacha watershed central highlands of Ethiopia which is endowed with rugged topography. The Geographic Information System with Analytical Hierarchy Process was used to generate the different maps for identifying appropriate sites for RWH. In this study, 11 factors that determine the RWH locations including slope, soil texture, runoff depth, land cover type, annual average rainfall, drainage density, lineament intensity, hydrologic soil group, antecedent moisture content, and distance to the roads were considered. The overall analyzed result shows that 10.50%, 71.10%, 17.90%, and 0.50% of the areas were found under highly, moderately, marginally suitable, and unsuitable areas for RWH, respectively. The RWH site selection was found highly dependent on a slope, soil texture, and runoff depth; moderately dependent on drainage density, annual average rainfall, and land use land cover; but less dependent on the other factors. The highly suitable areas for rainwater harvesting expansion are lands having a flat topography with a soil textural class of high-water holding capacity that can produce high runoff depth. The application of this study could be a baseline for planners and decision-makers and support any strategy adoption for appropriate RWH site selection.

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Section: Land Use Land Cover (Lulc)supporting

confidence: 66%