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GroMoPo Metadata for Korba Aquifer Zghibi model


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Created: Feb 07, 2023 at 2:28 p.m.
Last updated: Feb 07, 2023 at 2:28 p.m.
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Abstract

Tunisia relies extensively on coastal groundwater resources that are pumped at unsustainable rates to support irrigated agriculture, causing groundwater drawdown and water quality problems due to seawater intrusion. It is imperative for the country to regulate future groundwater allocations and implement conservation strategies based on robust hydrogeological assessments to alleviate the adverse impacts of groundwater depletion. We developed a 3D transient density-dependent groundwater model by coupling MODFLOW-2000 and MT3DMS to improve understanding of seawater intrusion into the Korba aquifer in Tunisia. Results indicate that groundwater overexploitation since 1965 induced 5.15 Mm(3)/year of seawater inflow while reducing submarine discharge into the sea by about 9.74 Mm(3)/year as compared to the steady state water budget in 1965. Projecting withdrawals from 2014 up to 2050 results in a slow but extensive groundwater table decline forming a cone of depression 15 m below sea level. The seawater wedge under this business-as-usual scenario is expected to reach 1.8 km from the shoreline, causing significant mixing of the TDS-rich seawater in the aquifer system. The cone of depression under a 25% increase in groundwater withdrawal drops to about 20 m below sea level while the saltwater front reaches 2.5 km inland. Countering the seawater intrusion problem requires reducing groundwater pumping by 17 Mm(3)/year to push back the saltwater front along the coastline by about 25% over a 43-year period. Application of the presented generic groundwater simulation framework guides developing management strategies to mitigate seawater intrusion in the Korba coastal aquifer and similar areas.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Tunisia
North Latitude
36.7600°
East Longitude
10.9500°
South Latitude
36.4400°
West Longitude
10.7400°

Content

Additional Metadata

Name Value
DOI 10.1007/s10661-019-7866-5
Depth 200
Scale < 1000 km²
Layers 2-5 layers
Purpose groundwater resources;salt water intrusion
GroMoPo_ID 48
IsVerified True
Model Code MODFLOW + MT3DMS
Model Link https://doi.org/10.1007/s10661-019-7866-5
Model Time 1965-2050
Model Year 2019
Model Authors Adel Zghibi, Ali Mirchi, Lahcen Zouhri, Jean-Denis Taupin, Anis Chekirbane, Jamila Tarhouni
Model Country Tunisia
Data Available report/paper only;Geological input available;Geological cross-section available, not further details
Developer Email adelzguibi@yahoo.fr
Dominant Geology unconsolidated
Developer Country Tunisia
Publication Title Implications of groundwater development and seawater intrusion for sustainability of a Mediterranean coastal aquifer in Tunisia
Original Developer No
Additional Information
Integration or Coupling Solute transport
Evaluation or Calibration static water levels;dynamic water levels
Geologic Data Availability

How to Cite

GroMoPo, D. Zamrsky (2023). GroMoPo Metadata for Korba Aquifer Zghibi model, HydroShare, http://www.hydroshare.org/resource/1b6c0681f7634e159ffb493442a8d266

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

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

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