Evaluation of Climate Change-Induced Impact on Streamflow and Sediment Yield of Genale Watershed, Ethiopia

Tufa Feyissa Feyissa Negewo and Arup Kumar Sarma

A chapter in The Nature, Causes, Effects and Mitigation of Climate Change on the Environment from IntechOpen

Abstract: In the 21st century, changes in induced climate can significantly affect the water resources system in the watershed. Understanding climate change disrupts hydrological processes can facilitate sustainable water resource strategies to resilient impacts of global warming. The hydrological response of watersheds will be accelerated by climate change, altering the rainfall, magnitude & timing of runoff, and sediment yield. The study investigates climate change aspects on the hydrological responses using Soil and Water Assessment Tool (SWAT) model interfaced with Geographical Information System (GIS) of Genale Basin, Ethiopia. The calibrated SWAT was applied to simulate the impact of climate, and the SUFI-II algorithm was used for parameter optimization & finalization. The change of climate scenarios was built using the outcomes bias-corrected CORDEX RCM daily precipitation, min/max temperature for Ethiopia under RCP 4.5 and RCP 8.5. The average monthly change of streamflow from -16.47% to 6.58% and - 3.6% to 8.27% under RCP4.5 and RCP8.5, respectively (2022-2080). The monthly average sediment yield change was -21.8% to 6.2% and - 5.6% to 4.66% for the RCP4.5 and RCP8.5 scenarios, respectively, over 2022-2080. It implies that the climate change-induced impacts on sediment yield are more significant than streamflow and suggest substantial adaptive management in watershed systems.

Keywords: Climate change; SWAT; Genale watershed; Sediment yield; RCM; Streamflow; Hydrological impacts evaluation (search for similar items in EconPapers)
JEL-codes: Q54 (search for similar items in EconPapers)
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.intechopen.com/chapters/77262 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:232875

DOI: 10.5772/intechopen.98515

Access Statistics for this chapter

More chapters in Chapters from IntechOpen
Bibliographic data for series maintained by Slobodan Momcilovic (ai@intechopen.com).