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| Type: | Resource | |
| Storage: | The size of this resource is 1.5 KB | |
| Created: | Feb 08, 2023 at 9:02 p.m. | |
| Last updated: | Feb 08, 2023 at 9:02 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 250 |
| Downloads: | 187 |
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Abstract
A steady state numerical groundwater flow model has been calibrated to characterize the spatial distribution of a key hydraulic parameter in a crystalline aquifer in southwestern Ghana. This was to provide an initial basis for characterizing the hydrogeology of the terrain with a view to assisting in the large scale development of groundwater resources for various uses. The results suggest that the structural entities that control groundwater occurrence in the area are quite heterogeneous in their nature and orientation, ascribing hydraulic conductivity values in the range of 4.5 m/d to over 70m/d to the simulated aquifer. Aquifer heterogeneities, coupled possibly with topographical trends, have led to the development of five prominent groundwater flowpaths in the area. Estimated groundwater recharge at calibration ranges between 0.25% and 9.13% of the total annual rainfall and appears to hold significant promise for large-scale groundwater development to support irrigation schemes. However, the model suggests that with reduced recharge by up to 30% of the current rates, the system can only sustain increased groundwater abstraction by up to 150% of the current abstraction rates. Prudent management of the resource will require a much more detailed hydrogeological study that identifies all the aquifers in the basin for the assessment of sustainable basin yield.
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Spatial
Content
Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1155/2013/606375 |
| Depth | |
| Scale | 1 001 - 10 000 km² |
| Layers | 1 |
| Purpose | Groundwater resources |
| GroMoPo_ID | 429 |
| IsVerified | True |
| Model Code | MODFLOW |
| Model Link | https://doi.org/10.1155/2013/606375 |
| Model Time | SS |
| Model Year | 2013 |
| Model Authors | Yidana, SM; Fynn, OF; Chegbeleh, LP; Nude, PM; Asiedu, DK |
| Model Country | Ghana |
| Data Available | Report/paper only |
| Developer Email | smyidana@ug.edu.gh |
| Dominant Geology | Crystalline |
| Developer Country | Ghana |
| Publication Title | Hydrogeological Conditions of a Crystalline Aquifer: Simulation of Optimal Abstraction Rates under Scenarios of Reduced Recharge |
| Original Developer | No |
| Additional Information | MDOFLOW model of crystalline aquifer below the Volta River basin to better assess groundwater resources. |
| Integration or Coupling | None of the above |
| Evaluation or Calibration | Static water levels |
| Geologic Data Availability | No |
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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