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GroMoPo Metadata for Jeffara of Medenine coastal aquifer MODFLOW-MT3DMS model


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Created: Feb 08, 2023 at 3:23 a.m.
Last updated: Feb 08, 2023 at 3:23 a.m.
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Abstract

The study of water quality and the quantification of reserves and their variations according to natural and anthropogenic forcing is necessary to establish an adequate management plan for groundwater resources. For this purpose, a modeling approach is a useful tool that allows, after calibration phase and verification of simulation, and under different scenarios of forcing and operational changes, to estimate and control the groundwater quantity and quality. The main objective of this study is to collect all available data in a model that simulates the Jeffara of Medenine coastal aquifer system functioning. To achieve this goal, a conceptual model was constructed based on previous studies and hydrogeological investigations. The regional groundwater numerical flow model for the Jeffara aquifer was developed using MODFLOW working under steady-state and transient conditions. Groundwater elevations measured from the piezometric wells distributed throughout the study area in 1973 were selected as the target water levels for steady state (head) model calibration. A transient simulation was undertaken for the 42 years from 1973 to 2015. The historical transient model calibration was satisfactory, consistent with the continuous piezometric decline in response to the increase in groundwater abstraction. The developed numerical model was used to study the system's behavior over the next 35 years under various constraints. Two scenarios for potential groundwater extraction for the period 2015-2050 are presented. The predictive simulations show the effect of the increase of the exploitation on the piezometric levels. To study the phenomenon of salinization, which is one of the most severe and widespread groundwater contamination problems, especially in coastal regions, a solute transport model has been constructed by using MT3DMS software coupled with the groundwater flow model. The best calibration results are obtained when the connection with the overlying superficial aquifer is considered suggesting that groundwater contamination originates from this aquifer. Recommendations for water resource managers The results of this study show that Groundwater resources of Jeffara of Medenine coastal aquifer in Tunisia are under immense pressure from multiple stresses. The water resources manager must consider the impact of economic and demographic development in groundwater management to avoid the intrusion of saline water. The results obtained presented some reference information that can serve as a basis for water resources planning. The model runs to provide information that managers can use to regulate and adequately control the Jeffara of Medenine water resources.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Tunisia
North Latitude
35.4167°
East Longitude
11.5000°
South Latitude
34.0500°
West Longitude
10.1167°

Content

Additional Metadata

Name Value
DOI 10.1111/nrm.12282
Depth 200
Scale 101 - 1 000 km²
Layers
Purpose Groundwater resources
GroMoPo_ID 163
IsVerified True
Model Code MODFLOW
Model Link https://doi.org/10.1111/nrm.12282
Model Time 1973-2015 (SS)
Model Year 2020
Model Authors Hamzaoui-Azaza, F; Zammouri, M; Ameur, M; Sy, MB; Gueddari, M; Bouhlila, R
Model Country Tunisia
Data Available Report/paper only
Developer Email fadoua_fst@yahoo.fr
Dominant Geology Unconsolidated sediments
Developer Country Tunesia
Publication Title Hydrogeochemical modeling for groundwater management in arid and semiarid regions using MODFLOW and MT3DMS: A case study of the Jeffara of Medenine coastal aquifer, South-Eastern Tunisia
Original Developer No
Additional Information The main objective of this study is to collectall available data in a model that simulates the Jeffara of Medenine coastal aquifer system functioning.To achieve this goal, a conceptual model was constructed based on previous studies and hydro-geological investigations.
Integration or Coupling Solute transport
Evaluation or Calibration
Geologic Data Availability

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Jeffara of Medenine coastal aquifer MODFLOW-MT3DMS model, HydroShare, http://www.hydroshare.org/resource/f380692e7c904e5fae507a7689a5a822

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

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

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