Arid Land Hydrogeology: In Search of a Solution to a by Mohamed, A.M.O.

By Mohamed, A.M.O.

There are many pressing difficulties in arid land hydrogeology and it's those concerns that are tackled during this quantity on barren region environments. The UAE-Japan symposia offer a venue for the alternate of craftsmanship, confronting such difficulties as purification, utilization and administration of groundwater, the evaluation and safeguard of sustainable water assets, and soil enhancement suggestions for moisture regulate in arid lands. The desire is greater knowing of dryland surroundings, mixed with leading edge options and applied sciences, will give a contribution to the greening of wilderness lands.

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Additional info for Arid Land Hydrogeology: In Search of a Solution to a Threatened Resource: Proceedings of the Third Joint UAE-Japan Symposium on Sustainable GCC Environment and Water Resources (EWR2006), 28 - 30 January 2006, Abu Dhabi, UAE (Volume IV in DARE series)

Example text

In neighbouring Sultanate of Oman, a $100 million groundwater fed drinking water supply scheme to 100,000 people has been developed in the locally named Al Masarrat Aquifer, to serve the Al Dhahirah region (Brook, 2001). The Upper Fars UAE equivalent underlies about 80% of the Eastern Region of the Emirate and comprises primarily conglomerates (moderate to highly productive) with inter bedded dolomitic marls, clay and siltstones. The dolomite can occur as meter thick, impervious beds which tend to compartmentalize the aquifers, resulting in multi aquifer layers with varying hydrochemistry.

4 SIMULATION OF THE RECHARGE EXPERIMENT The experiment of pond recharge and its simulation was selected from October 4, 2004 to November 21, 2004 for 48 days. A stress period is defined as a time period during which all time dependent processes such as pumping and recharge are constant and could not be changed by the user. The length of stress period in this exercise was taken as one day. The total number of stress periods considered for the calibration period was 48. The finite-difference technique employed by the MODFLOW requires each stress period to be discretized in to several time steps to obtain an accurate solution.

6 CONCLUSIONS A field experiment of groundwater recharge was conducted in the area of Wadi Ham to assess the feasibility of the site and identify the infiltration rate. The recharge scheme included a 25 ϫ25 m recharge pond and 8 monitoring wells surrounding the pond. The recharge water was supplied from the Kalbah well-field which is located about 800 m from the pond. MODFLOW was used to simulate the recharge process. A good agreement was achieved between the simulated and observed groundwater levels.

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