MATHEMATICAL MODEL FOR GROUNDWATER FLOW  WEST AL-RAZZAZAH LAKE, IRAQI WESTERN DESERT

B. Al-Jawad, Sadiq; J. Saud, Qays; M. Al-Shamma, Ayser

	MATHEMATICAL MODEL FOR GROUNDWATER FLOW WEST AL-RAZZAZAH LAKE, IRAQI WESTERN DESERT
Iraqi Bulletin of Geology and Mining
Article 1, Volume 4, Issue 2, 2008, Pages 29-42
Authors
Sadiq B. Al-Jawad; Qays J. Saud; Ayser M. Al-Shamma
Abstract
The groundwater in the studied area is found in two main aquifers, within Umm Er Radhuma – Dammam and Tayarat formations, which consist of intensively faulted, fractured and karstified limestone and dolomite. The source of aquifers recharge is subsurface flow from the regional aquifer that extends in the Saudi Arabian territory, in addition to small amount of precipitation that percolates and affects the upper aquifer precisely. Thus, groundwater flows from southwest towards northeast direction that coincides with the topographic slope. The aquifers are non homogeneous, where the hydraulic conductivity varies both vertically and laterally due to the effect of karst features and directions of fracturing. The whole aquifer system can be considered very interesting for its high discharge and recharge rates with negligible drawdown. Mathematical model was designed to show the behavior of flow in the upper aquifer (Umm Er Radhuma – Dammam) and to study the possibility of increasing the discharge rate to 3750 l/ sec from the basin to utilize it in agricultural projects. Accordingly, the mean yearly drawdown through the period 2003 – 2018 is expected to be ranging from 4 m in the west to 50 m in the east, which in turn will effect the springs outflow that contribute in recharging of Al-Razzazah Lake.

Statistics Article View: 154 PDF Download: 72