Ground Water
Volume 27, Issue 4, 1989, Pages 481-490  


Origin of the saline ground water in Wadi Ar-Rumah, Saudi Arabia

Sowayan, A.M., Allayla, R.

Second Author: Civil Engineering Dept., King Fahd Univ. of Petroleum and Minerals, Dhahran, Saudi Arabia.



The aquifer contains highly saline water in the area where Wadi Ar-Rumah intersects the outcrop of the Saq Sandstone. The area is agriculturally important, but the saline water has caused problems due to intrusion into other parts of the aquifer as a result of heavy pumping. The geology, hydrogeology, and hydrochemistry of the area were examined and pertinent field data were used to explain the formation of the saline water. At the end of the last pluvial period, the ephemeral runoff in the wadi decreased and a clay layer was deposited on its floor. Ground water near the surface was evaporated by capillary draw and led to a concentration of solutes. A shallow clay layer prevented wadi flows from flushing out the saline ground water. -from Authors