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GroMoPo Metadata for Dahaban Region model


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Created: Feb 08, 2023 at 3:38 a.m.
Last updated: Feb 08, 2023 at 3:39 a.m.
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Abstract

Shallow renewable groundwater sources have been used to satisfy the domestic needs and the irrigation in many parts of Saudi Arabia. Increased demand for water resulting from accelerated development activities has placed excess stress on the renewable sources especially in coastal aquifers of the western region of Saudi Arabia. It is expected that the current and future development activities will increase the rate of groundwater mining of the coastal aquifer near the major city Jeddah and surrounding communities unless management measures are implemented. The current groundwater development of Dahaban coastal aquifer located at alluvial fan at the confluence of three major Wadis is depleting the shallow renewable groundwater sources and causes deterioration of its quality. Numerical models are known tools to evaluate groundwater management scenarios under a variety of development options under different hydrogeological regimes. In this study, two models are applied-the MODFLOW for evaluating the hydrodynamic behaviors of the aquifer and MT3D salinity distribution to the costal aquifer near Dahaban town. The models' simulation evaluates two development scenarios-the impact of excessive abstraction and the water salinity variation keeping abstraction at its current or increases in levels with or without groundwater recharge taking place. The simulation evaluated two scenarios covering a 25-year period-keeping the current abstraction at its current and the other scenario is increasing the well abstraction by 50% for dry condition (no recharge) and wet condition (with recharge). The analysis reveals that, under the first scenario, the continuation of the current pumping rates will result in depletion of the aquifer resulting in drying of many wells and quality deterioration at the level of 2,500 ppm. The results are associated with the corresponding salinity distribution in the region. Simulation of salinity in the region is a density-independent problem as salt concentration does not exceed 2,000 ppm, which is little value compared with sea salinity that amounts to 40,000 ppm. It is not recommended to increase the pumping rate than the current values. However, for the purpose of increasing water resources in the region, it is recommended to install new wells in virgin zones west of Dahaban main road. Maps of high/low potential groundwater and maps of salinity zones (more or less than 1,000 ppm) are provided and could be used to identify zones of high groundwater potential for the four studied scenarios. The implemented numerical simulation of Dahaban aquifer was undertaken to assess the water resources potential in order to reduce the depletion of sources in the future.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Saudi Arabia
North Latitude
22.0836°
East Longitude
39.3336°
South Latitude
21.7503°
West Longitude
38.9169°

Content

Additional Metadata

Name Value
DOI 10.1007/s12517-012-0527-4
Depth 35
Scale 1 001 - 10 000 km²
Layers 1
Purpose Groundwater resources;Salt water intrusion
GroMoPo_ID 174
IsVerified True
Model Code MODFLOW;MT3D
Model Link https://doi.org/10.1007/s12517-012-0527-4
Model Time SS
Model Year 2013
Model Authors Alamri, NS
Model Country Saudi Arabia
Data Available Report/paper only
Developer Email nalemari@kau.edu.sa
Dominant Geology Unsure
Developer Country Saudi Arabia
Publication Title Evaluation of the water resources potential at Dahaban region, western Saudi Arabia
Original Developer No
Additional Information In this study, two models are applied, the MODFLOW for evaluating the hydrodynamic behaviors of the aquifer and MT3D salinity distribution to the costal aquifer near Dahaban town. The models’ simulation evaluates two development scenarios—the impact of excessive abstraction and the water salinity variation keeping abstraction at its current or increases in levels with or without groundwater recharge taking place.
Integration or Coupling Water management
Evaluation or Calibration Static water levels
Geologic Data Availability No

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Dahaban Region model, HydroShare, http://www.hydroshare.org/resource/38447c6fd6d1433490f4a71a640a8cf5

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

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

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