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| Type: | Resource | |
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| Created: | Apr 13, 2023 at 1:42 p.m. | |
| Last updated: | Apr 13, 2023 at 1:42 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 757 |
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Abstract
The study area, in northwestern Burundi, is an alluvial plain consisting of fine clayey sands and coarse sands with mixed lithology. The aquifer of the lower Rusizi plain could be considered as confined under a clay layer. A 2D horizontal groundwater flow model was developed under steady-state conditions using the Modflow software. The study aims to determine the most productive areas of this confined alluvial aquifer and the main aquifer inflow and outflow values together with the recharge and river-aquifer interactions. The groundwater potential is dependent on the spatial distribution of hydraulic conductivity and aquifer thickness values providing the local transmissivity values. The calibrated model made it possible to assess the spatial distribution of the hydraulic conductivity values at the regional scale, which ranged from 6 x 10(-6) (contact between alluvial plain and Precambrian basement) to 7.5 x 10(-3) m/s (coastal barriers). The results also provided the computed groundwater flow directions, and an estimation of the groundwater levels in areas not yet investigated by drilling. The results of the computed groundwater flow budget allowed us to deduce that recharge and river-aquifer interaction constitute the main inflow while the downwards boundaries (where piezometric heads could be prescribed) are the main zones where outflows occur. The results of this model can be used in the planning of pumping test programs, locating areas with high groundwater potential to plan water supply for different private and public users. This predictive tool will contribute to the resolution of problems related to the use and integrated management of the groundwater resource in this part of Burundi.
Subject Keywords
Coverage
Spatial
Content
Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.3390/w13233376 |
| Depth | N/A |
| Scale | 101 - 1 000 km² |
| Layers | N/A |
| Purpose | Groundwater resources |
| GroMoPo_ID | 2005 |
| IsVerified | True |
| Model Code | MODFLOW |
| Model Link | https://doi.org/10.3390/w13233376 |
| Model Time | SS |
| Model Year | 2021 |
| Creator Email | kcompare@fsu.edu |
| Model Country | Burundi |
| Data Available | Report/paper only |
| Developer Email | ngenzeclaver@gmail.com; alain.dassargues@uliege.be; t.bahaj@um5r.ac.ma; p.orban@uliege.be; i.kacimi@um5r.ac.ma; Louis.nahimana@ub.edu.bi |
| Dominant Geology | Siliciclastic sedimentary (sandstones, shales) |
| Developer Country | Morocco; Belgium; Burundi |
| Publication Title | Groundwater Flow Modeling: A Case Study of the Lower Rusizi Alluvial Plain Aquifer, North-Western Burundi |
| Original Developer | No |
| Additional Information | N/A |
| 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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