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GroMoPo Metadata for East African Rift Valley integrated model


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Created: Feb 07, 2023 at 6:03 p.m.
Last updated: Feb 07, 2023 at 6:04 p.m.
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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

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Ethiopia, Kenya, Tanzania
North Latitude
8.5390°
East Longitude
38.7811°
South Latitude
7.8583°
West Longitude
38.1385°

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

GroMoPo, A. Quichimbo (2023). GroMoPo Metadata for East African Rift Valley integrated model, HydroShare, http://www.hydroshare.org/resource/d272a5e1f24644efae23a27b2205fb23

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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