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| Created: | Feb 07, 2023 at 6:03 p.m. | |
| Last updated: | Feb 07, 2023 at 6:04 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 569 |
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Abstract
Study region: East African Rift Valley basin. Study focus: Water availability in the rift valley relies heavily on the discharge from the highlands to rivers that run to the rift floor. This research explores the effect of Land use/Land cover (LULC) and climate change on water yield and groundwater recharge (WYGR) using coupled SWAT-MODFLOW, which integrates Soil and Water Assessment Tool (SWAT) and Newton Modular Finite Difference Groundwater Flow (MODFLOW-NWT). The LULC change was analyzed using artificial neural network-based cellular automata. New hydrological insights: The dominant LULC is cultivated land and expanded by 5% to the forest and grassland areas. The average temperature and precipitation are expected to rise by 8-11% and 3-6%, respectively. Climate change affects the spatiotemporal distribution of WYGR significantly, while LULC change has a trivial effect. Under the baseline scenario, the recharge was 10% of the average annual precipitation, but climate change is projected to reduce it by 47-53%. Water yield reduction up to 48% and change of perennial rivers to intermittent are expected in the coming decades. The region will experience water scarcity, emerging mainly from climate change.
Subject Keywords
Coverage
Spatial
Content
Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1016/j.ejrh.2021.100926 |
| Depth | 225 |
| Scale | < 10 000 km² |
| Layers | 1 layer |
| Purpose | groundwater resources |
| GroMoPo_ID | 59 |
| IsVerified | True |
| Model Code | MODFLOW |
| Model Link | https://doi.org/10.1016/j.ejrh.2021.100926 |
| Model Time | 1994-2001 |
| Model Year | 2021 |
| Model Authors | Bisrat AyalewYifru, II-MoonChung, Min-GyuKim, Sun WooChang |
| Model Country | Ethiopia, Kenya, Tanzania |
| Data Available | report/paper only |
| Developer Email | imchung@kict.re.kr |
| Dominant Geology | Model focuses on multiple geologic materials |
| Developer Country | Republic of Korea |
| Publication Title | Assessing the Effect of Land/Use Land Cover and Climate Change on Water Yield and Groundwater Recharge in East African Rift Valley using Integrated Model |
| Original Developer | No |
| Additional Information | |
| Integration or Coupling | Surface water |
| Evaluation or Calibration | static water levels |
| Geologic Data Availability |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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