GROUNDWATER RESOURCES IN A SEMIARID AREA - A CASE-STUDY FROM CENTRAL SUDAN

Citation
Ea. Farah et al., GROUNDWATER RESOURCES IN A SEMIARID AREA - A CASE-STUDY FROM CENTRAL SUDAN, Journal of African earth sciences, and the Middle East, 25(3), 1997, pp. 453-466
Citations number
25
ISSN journal
08995362
Volume
25
Issue
3
Year of publication
1997
Pages
453 - 466
Database
ISI
SICI code
0899-5362(1997)25:3<453:GRIASA>2.0.ZU;2-3
Abstract
Hydrogeological investigations were carried out to evaluate the ground water resources in the northern part of the Khartoum Basin, central Su dan. The hydrogeological system consists of two aquifers. The upper aq uifer includes mainly the Upper Gezira Formation, the upper part of th e Lower Gezira Formation in the area between the two Niles, and the up permost parts of the Lower Omdurman Formation in other areas of the st udy region. The lower aquifer is developed mainly in the other deeper sedimentary sequences. The sedimentological characteristics of the hos t formations appear to have affected the physico-chemical properties o f the two aquifers in different ways. The grain size and pumping test analyses indicate the higher productivity of the lower aquifer, where the water storage is approximately eight times as much as the upper on e. Except in a few parts of the upper aquifer, groundwater in the stud y area is free from objectionable properties in relation to drinking a nd irrigation demands. (C) 1997 Elsevier Science Limited.