Responses of surface runoff and soil water-erosion to changes in seasonal land cover and rainfall intensity; the case of Shilansha Watershed, Rift Valley Basin of Ethiopia

Simple item page
cg.contributor.affiliationUniversity of Twenteen_US
cg.contributor.affiliationInternational Water Management Instituteen_US
cg.contributor.affiliationArba Minch Universityen_US
cg.contributor.affiliationUniversity of Aberdeenen_US
cg.contributor.donorUK Research and Innovation GCRF (Global Challenges Research Fund)en_US
cg.contributor.donorUniversity of Aberdeenen_US
cg.contributor.donorESA EO AFRICA R&D Facilityen_US
cg.coverage.countryEthiopiaen_US
cg.coverage.iso3166-alpha2ETen_US
cg.coverage.subregionShilansha Watersheden_US
cg.coverage.subregionRift Valley Basinen_US
cg.creator.identifierAlemseged Tamiru Haile: 0000-0001-8647-2188en_US
cg.creator.identifierWolde Mekuria: 0000-0001-5252-4795en_US
cg.identifier.doihttps://doi.org/10.1016/j.ejrh.2025.102289en_US
cg.identifier.iwmilibraryH053697en_US
cg.isijournalISI Journalen_US
cg.issn2214-5818en_US
cg.journalJournal of Hydrology: Regional Studiesen_US
cg.reviewStatusPeer Reviewen_US
cg.volume58en_US
dc.contributor.authorGedle, Assefaen_US
dc.contributor.authorRientjes, T.en_US
dc.contributor.authorHaile, Alemseged Tamiruen_US
dc.contributor.authorMekuria, Woldeen_US
dc.contributor.authorHallett, P.en_US
dc.contributor.authorSmith, J.en_US
dc.date.accessioned2025-03-27T05:27:37Zen_US
dc.date.available2025-03-27T05:27:37Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/173888en_US
dc.titleResponses of surface runoff and soil water-erosion to changes in seasonal land cover and rainfall intensity; the case of Shilansha Watershed, Rift Valley Basin of Ethiopiaen_US
dcterms.abstractStudy Region: Shilansha is a watershed located in the Upper Bilate River of the Rift Valley Lake Basin in southern Ethiopia. The region experiences extreme soil water-erosion among the greatest rates globally at 498 tons ha- 1 yr- 1 leading to large quantities of sediment accumulation in Lake Abaya. Study Focus: Surface runoff, soil water-erosion, and sediment loads in the region vary with agricultural seasons and rainfall intensities but are often poorly quantified in modeling studies. This study assessed these effects using the event-based physically based distributed open-source Limburg Soil Water Erosion Model (OpenLISEM), incorporating local field data and multi-sensor satellite data processed with machine learning techniques. New Hydrological Insights: During the fallow season, simulated surface runoff and total soil loss were 9.7 % and 47 % larger than the growing season and 0.9 % and 42 % larger than the harvest season, respectively. Compared to moderate intensity, an 87 % increase in high rainfall intensity increased surface runoff by 159 % and soil loss by 295 %, while a 45 % decrease in low rainfall intensity reduced surface runoff by 49 % and soil loss by 85 %. High rainfall intensity had a greater impact when combined with fallow season land cover, while effects were smallest when low rainfall intensity combined with growing season land cover. A calibrated model parameter set for a particular season resulted in deteriorated model performance when applied to other seasons. These findings offer insights on the importance of considering seasonal changes in land cover and rainfall intensity when developing soil and water conservation strategies.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.available2025-03-10en_US
dcterms.bibliographicCitationGedle, Assefa; Rientjes, T.; Haile, Alemseged Tamiru; Mekuria, Wolde; Hallett, P.; Smith, J. 2025. Responses of surface runoff and soil water-erosion to changes in seasonal land cover and rainfall intensity; the case of Shilansha Watershed, Rift Valley Basin of Ethiopia. Journal of Hydrology: Regional Studies, 58:102289. [doi: https://doi.org/10.1016/j.ejrh.2025.102289]en_US
dcterms.extent102289.en_US
dcterms.issued2025-04en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-NC-ND-4.0en_US
dcterms.publisherElsevieren_US
dcterms.subjectrunoffen_US
dcterms.subjectsoil wateren_US
dcterms.subjecterosionen_US
dcterms.subjectland coveren_US
dcterms.subjectrainfallen_US
dcterms.subjectwatershedsen_US
dcterms.subjectsediment loaden_US
dcterms.subjectmodelsen_US
dcterms.typeJournal Articleen_US

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IWMI Journal Articles
Sustainable Water Infrastructure and Ecosystems (SWIE)