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| Created: | Feb 08, 2023 at 4:47 a.m. | |
| Last updated: | Feb 08, 2023 at 4:47 a.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 471 |
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Abstract
In recent years, groundwater pumping has increased for domestic, industrial, and irrigation use in the Modjo River catchment. Understanding changes in groundwater levels is crucial for the sustainable use and management of aquifer. This study investigates the groundwater flow system and aquifer response to increased groundwater pumping and reduced recharge using the calibrated steady-state groundwater level and budget as a baseline. The groundwater flow corresponds to the direction of the Modjo River flow, following the topographic gradient. The simulated groundwater budget indicates that recharge from precipitation and surface water (crater lakes and river) are the main inflow to the aquifer, while the outflow from the aquifer is due to groundwater pumping, natural subsurface flow to downstream area, and base flow. Analysis of the different scenarios reveals that both an increase in well pumping and a decline in recharge resulted in a decrease of the base flow to Bishoftu crater lakes and Mojo River, and to the downstream subsurface flow. In conclusion, increasing human demand for groundwater and variability in recharge will affect groundwater contribution to surface water and ultimately will be a source of concern in the future for both environmental flows and groundwater management.
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1007/s40808-020-01040-0 |
| Depth | 1000 |
| Scale | 1 001 - 10 000 km² |
| Layers | 1 |
| Purpose | Groundwater resources |
| GroMoPo_ID | 214 |
| IsVerified | True |
| Model Code | MODFLOW |
| Model Link | https://doi.org/10.1007/s40808-020-01040-0 |
| Model Time | SS |
| Model Year | 2021 |
| Model Authors | Gebere, A; Kawo, NS; Karuppannan, S; Hordofa, AT; Paron, P |
| Model Country | Ethiopia |
| Data Available | Report/paper only |
| Developer Email | nafyad.serre@gmail.com |
| Dominant Geology | Model focuses on multiple geologic materials |
| Developer Country | Ethiopia; USA; Netherlands |
| Publication Title | Numerical modeling of groundwater flow system in the Modjo River catchment, Central Ethiopia |
| Original Developer | No |
| Additional Information | This study investigates the groundwater flow system and aquifer response to increased groundwater pumping and reduced recharge using the calibrated steady-state groundwater level and budget as a baseline. The groundwater flow corresponds to the direction of the Modjo River flow, following the topographic gradient. The simulated groundwater budget indicates that recharge from precipitation and surface water (crater lakes and river) are the main inflow to the aquifer, while the outflow from the aquifer is due to groundwater pumping, natural subsurface flow to downstream area, and base flow. |
| Integration or Coupling | Water use;Water management |
| Evaluation or Calibration | Static water levels;Dynamic water levels |
| Geologic Data Availability | Yes |
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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