Watershed Hydrological Response in Developing Climate Change Resilience and Adaptation Strategies, case of Gilgal Gibe Watershed, Ethiopia

Watershed Hydrological Response in Developing Climate Change Resilience and Adaptation Strategies, case of Gilgal Gibe Watershed, Ethiopia | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Watershed Hydrological Response in Developing Climate Change Resilience and Adaptation Strategies, case of Gilgal Gibe Watershed, Ethiopia Wana Geyisa Namara, Zeinu Ahimed Rabba, Sewmehon Sisay Fanta, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3855399/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Climate change is one of the most challenging and inevitable global environmental problems affecting mankind and its environment regardless of urban and rural areas. Its effect on watershed hydrology is challenging the sustainable water resources management and its availability across the globe. In order to develop a sustainable climate change adaptation strategy, understanding watershed hydrological response to the ever increasing climate change is highly important. Hence, the main objective of this study was investigating role of watershed hydrological response in developing climate resilience and adaptation strategy as a case study in Gilgal Gibe watershed, Omo Gibe river basin, Ethiopia. To achieve the main objective of the study, three regional climate models (RCM) derived from one global climate model (GCM) under two greenhouse gas emission scenarios (RCP4.5 & RCP8.5) were collected from CORDEX Africa. These data were analyzed against the 1986–2016 baseline data and projected for near future term (2020–2050) and for near future term (2051–2080). The climate dataset trend analysis over the specified period was conducted using Mann-Kendall test and the hydrological modeling was performed using the calibrated and validated HEC-HM model. From the analysis it was found that hydro-climate variability over the proposed time horizon was clearly observed from all RCM under both greenhouse gas emission scenarios. The stream flow revealed an oscillating trend over the course of the operation years under RCP4.5 and RCP8. Hence, this information is important for water resources manager, decision makers and policy makers to develop sustainable climate change resilience and adaptation. Climate Change Adaptation Climate Change Hydrological Response RCM Water Resources Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3855399","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":272743538,"identity":"4a1e6b5a-1d1d-4178-8bc3-3b9a231b935b","order_by":0,"name":"Wana Geyisa Namara","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7UlEQVRIiWNgGAWjYNACAwYGNvnDB4AsCRnitfBJsCWAtPAQb5GcBI8BiCasxeD48YuPeQrq5Nmkez6/ulFjwcPAfvjoBrxazuQUG/MYHDZskzm7zTrnGNBhPGlpN/BpMTuQkybNY3CAsY0hd5txDhtQiwSPGX4t59+k/+YxqLNvY8h5ZpzzjxgtN9KPMfMYMCe2SeQwP85tI0KL/Y03zJJzDA4nt/EcM2PO7ZPgYSPkF8n+9Icf3vyps53f3vz4c863Ojl+9sPH8GoBRoQBEzQu2CTAJH7lIMD+gPEHhMX8gbDqUTAKRsEoGIkAAFWGRtxIQS7dAAAAAElFTkSuQmCC","orcid":"","institution":"Jimma University","correspondingAuthor":true,"prefix":"","firstName":"Wana","middleName":"Geyisa","lastName":"Namara","suffix":""},{"id":272743539,"identity":"48fb6d3f-db6a-417b-a506-1e45d32ea633","order_by":1,"name":"Zeinu Ahimed Rabba","email":"","orcid":"","institution":"Jimma University","correspondingAuthor":false,"prefix":"","firstName":"Zeinu","middleName":"Ahimed","lastName":"Rabba","suffix":""},{"id":272743540,"identity":"195d96cb-92a6-4682-b4cd-ca76a028b999","order_by":2,"name":"Sewmehon Sisay Fanta","email":"","orcid":"","institution":"Jimma University","correspondingAuthor":false,"prefix":"","firstName":"Sewmehon","middleName":"Sisay","lastName":"Fanta","suffix":""},{"id":272743541,"identity":"be4cdb82-0cb1-4521-83d4-2efc2414eec6","order_by":3,"name":"Efrem Wakjira Hode","email":"","orcid":"","institution":"Jimma University","correspondingAuthor":false,"prefix":"","firstName":"Efrem","middleName":"Wakjira","lastName":"Hode","suffix":""}],"badges":[],"createdAt":"2024-01-12 02:44:09","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3855399/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3855399/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":51547061,"identity":"10695062-c773-439b-b0df-1be00414e9bd","added_by":"auto","created_at":"2024-02-23 13:27:35","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":917688,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3855399/v1_covered_1da1ffa6-4ce6-4387-bbb3-85190b4353b7.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Watershed Hydrological Response in Developing Climate Change Resilience and Adaptation Strategies, case of Gilgal Gibe Watershed, Ethiopia","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Climate Change Adaptation, Climate Change, Hydrological Response, RCM, Water Resources","lastPublishedDoi":"10.21203/rs.3.rs-3855399/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3855399/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eClimate change is one of the most challenging and inevitable global environmental problems affecting mankind and its environment regardless of urban and rural areas. Its effect on watershed hydrology is challenging the sustainable water resources management and its availability across the globe. In order to develop a sustainable climate change adaptation strategy, understanding watershed hydrological response to the ever increasing climate change is highly important. Hence, the main objective of this study was investigating role of watershed hydrological response in developing climate resilience and adaptation strategy as a case study in Gilgal Gibe watershed, Omo Gibe river basin, Ethiopia. To achieve the main objective of the study, three regional climate models (RCM) derived from one global climate model (GCM) under two greenhouse gas emission scenarios (RCP4.5 \u0026amp; RCP8.5) were collected from CORDEX Africa. These data were analyzed against the 1986\u0026ndash;2016 baseline data and projected for near future term (2020\u0026ndash;2050) and for near future term (2051\u0026ndash;2080). The climate dataset trend analysis over the specified period was conducted using Mann-Kendall test and the hydrological modeling was performed using the calibrated and validated HEC-HM model. From the analysis it was found that hydro-climate variability over the proposed time horizon was clearly observed from all RCM under both greenhouse gas emission scenarios. The stream flow revealed an oscillating trend over the course of the operation years under RCP4.5 and RCP8. 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