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GroMoPo Metadata for Rib catchment model
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Created: Feb 08, 2023 at 1:37 p.m. (UTC)
Last updated: Mar 09, 2026 at 8:42 p.m. (UTC)
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Abstract

Study region: Rib catchment in the Lake Tana sub-basin, Upper Blue Nile River, Ethiopia. Study focus: This paper aimed to assess the impacts of future increase in abstraction and recharge reduction on the groundwater, groundwater availability, and groundwater-surface waters interaction based on a three-dimensional groundwater flow modeling. Calibration was made under the steady state condition. Scenario analysis performed for 1) increase in abstraction, 2) decrease in recharge, 3) the worst-case scenario that combined the aforementioned two scenarios and with additional extraction for irrigation, and 4) for the optimal-case scenario, which considers 5% recharge increase for the worst-case scenario model. New hydrological insights for the region: It is found that the groundwater flows from uplands toward the Tana Lake. The total inflow to and outflow from the system in the calibrated model are 1733480 m(3)/d and 1840451 m(3)/d, respectively. Groundwater level drop, reduction in base flows to surface waters, and in evapotranspiration flux compared to the calibrated values encountered for all scenarios, which are significant (mean 38.4 m, 28.5-100 %, and 97.8 %, respectively) for the worst-case scenario. On the other hand, an increase in groundwater level (mean 9.8 m), base flows (0-14.4 %), and evapotranspiration flux (29.5 %) observed for the optimal scenario when compared to the worst-case scenario results. Results suggest that groundwater management measures should be implemented to mitigate the impacts.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Ethiopia
North Latitude
15.2300°
East Longitude
47.4700°
South Latitude
4.0900°
West Longitude
32.7400°

Content

Additional Metadata

Name Value
DOI 10.1016/j.ejrh.2021.100831
Depth 400
Scale 1 001 - 10 000 km²
Layers 2
Purpose Groundwater resources
GroMoPo_ID 237
IsVerified True
Model Code MODFLOW
Model Link https://doi.org/10.1016/j.ejrh.2021.100831
Model Time SS
Model Year 2021
Model Authors Mamo, S; Birhanu, B; Ayenew, T; Taye, G
Model Country Ethiopia
Data Available Report/paper only
Developer Email sileshi.mamo@bdu.edu.et
Dominant Geology Model focuses on multiple geologic materials
Developer Country Ethiopia
Publication Title Three-dimensional groundwater flow modeling to assess the impacts of the increase in abstraction and recharge reduction on the groundwater, groundwater availability and groundwater-surface waters interaction: A case of the rib catchment in the Lake Tana sub-basin of the Upper Blue Nile River, Ethiopia
Original Developer No
Additional Information This paper aimed to assess the impacts of future increase in abstraction and recharge reduction on the groundwater, groundwater availability, and groundwater-surface waters interaction based on a three-dimensional groundwater flow modeling.
Integration or Coupling Water use;Water management
Evaluation or Calibration Static water levels
Geologic Data Availability Yes

How to Cite

GroMoPo, Leijnse, E. (2026). GroMoPo Metadata for Rib catchment model, HydroShare, http://www.hydroshare.org/resource/84fd7125daf842d1affc85d3927c9f09

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

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

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