Understanding the hydrological impacts of climate change in the Tana River Basin

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dc.creatorSood, Aditya
dc.creatorMuthuwatta, Lal P.
dc.creatorSilva, Sandeepana
dc.creatorMcCartney, Matthew P.
dc.date2017
dc.date2018-02-21T08:58:57Z
dc.date2018-02-21T08:58:57Z
dc.date.accessioned2026-06-27T18:44:25Z
dc.descriptionThe Tana River is one of Kenya’s most important rivers. It is the principal water source for Nairobi, the capital city, providing water for hydroelectric power generation and irrigation. Several of the flagship projects laid out in Vision 2030 - the blueprint that guides Kenya’s national development – are located in the basin. This report presents the findings of a study to determine the possible impacts of climate change on the hydrology of the basin. Data from seven Regional Circulation Models (RCMs), simulating two Representative Concentration Pathways (RCPs), were used as input to the Soil and Water Assessment Tool (SWAT) hydrological model. For both RCPs, rainfall is projected to increase across the basin over the remainder of the twenty-first century. Associated increases in water yield, groundwater recharge and baseflow point to an improved water resource situation in the future. However, declining natural flow regulation, increased variability, and considerable increases in the frequency and magnitude of floods pose a risk that threatens to undermine development opportunities. Water resource management will be much more difficult than under historic climatic conditions.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/91057
dc.identifier.urihttp://hdl.handle.net/123456789/164183
dc.languageen
dc.publisherInternational Water Management Institute
dc.rightsOpen Access
dc.sourceSood, Aditya; Muthuwatta, Lal; Silva, Sandeepana; McCartney, Matthew. 2017. Understanding the hydrological impacts of climate change in the Tana River Basin. Colombo, Sri Lanka: International Water Management Institute (IWMI). 40p. (IWMI Working Paper 178) doi: 10.5337/2017.220
dc.subjectclimate change
dc.subjectrain
dc.subjectevapotranspiration
dc.subjectflooding
dc.subjectriver basin
dc.subjecthydrology
dc.subjectdischarges
dc.subjectwater yield
dc.subjectgroundwater recharge
dc.subjectnatural resources
dc.subjectinfrastructure
dc.subjectland use
dc.subjectecosystem services
dc.subjectsoil water
dc.titleUnderstanding the hydrological impacts of climate change in the Tana River Basin
dc.typeWorking Paper

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