Figure 5. The hydrochemical classification of four different groups of groundwater based on the dominated cations and anions: 1- (Na+ , K+) and ( HCO3–) group (8.85 %) 2- (Na+ , K+), Cl- and SO4- - group (32.37 %) 3- (Ca++ + Mg++) and (HCO3 –) group (15.62 %) 4- (Ca++ + Mg++), Cl- and SO4- - group (43.38 %), (1991 analysis)

From

Evaluation of Ground Water Quality in North East Wadi Halfa, Northern State, Sudan

Ezzat Ahmed Abd Elsayed, Elhag A. B, Yousif A. M

American Journal of Water Resources. 2021, 9(2), 103-110 doi:10.12691/ajwr-9-2-7