An assessment of climate change impacts on water sufficiency: the case of Extended East Rapti Watershed, Nepal
An understanding of water sufficiency provides a basis for informed-planning, development and management of water resources. This study assessed spatio-temporal distribution in water sufficiency in the Extended East Rapti watershed in Nepal. The “Palika” (local government unit) is considered as a spatial-scale and seasons and future periods as temporal-scale. The water sufficiency was evaluated based on water sufficiency ratio (WSR) and water stress index (WSI). A hydrological model was developed to simulate water availability. An ensemble of multiple Regional Climate Models was used for assessing climate change impacts. Results showed water sufficiency by mid-century is projected to decrease; WSR by 40% and WSI by 61%. Despite projected decrease in water sufficiency, annually available water resources are projected as sufficient for the demands until the mid-century, however, seasonal variability and scarcity in future is projected in most Palikas. Such results are useful for water security planning in the Palikas.
| Main Authors: | , , |
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| Format: | Journal Article biblioteca |
| Language: | English |
| Published: |
Elsevier
2022-09
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| Subjects: | water availability, climate change, assessment, watersheds, hydrological modelling, forecasting, water resources, water balance, water stress, water demand, impact assessment, domestic water, irrigation water, groundwater, surface water, precipitation, temperature, stream flow, biochemistry, |
| Online Access: | https://hdl.handle.net/10568/120377 https://vlibrary.iwmi.org/pdf/H051308.pdf https://doi.org/10.1016/j.envres.2022.113434 |
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