Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 23 Issue 1

Figure 9a: Wilcox Plot of Hand Dug Wells Tapping Upper Aquifer in Chad Formation 1 0 0 1 0 0 0 S a l i n i t y H a z a r d ( C o n d ) 0 6 1 3 1 9 2 6 3 2 SodiumHazard (SAR) W i l c o x D i a g r a m 2 5 0 7 5 0 2 2 5 0 C 1 C 2 C 3 C 4 S 1 S 2 S 3 S 4 A F N I I U J M G N U I Z A K S O Q Y P L E G E N D E B H 1 I B H 2 L B H 3 K B H 4 P B H 5 S B H 6 O B H 7 Q B H 8 Y B H 9 F B H 1 0 N B H 1 1 I B H 1 2 I B H 1 3 U B H 1 4 J B H 1 5 M B H 1 6 G B H 1 7 N B H 1 8 U B H 1 9 Z B H 2 0 S o d iu m ( A l k a l i) h S 1 : L o w S 2 : M e d iu m S 3 : H i g h S 4 : V e r y h ig h S a l i n it y h a z a r d : C 1 : L o w C 2 : M e d i u m C 3 : H i g h C 4 : V e r y h i g h Hydrochemical Assessment of Surface and Groundwater in Some Selected Communities of Borno and Yobe State © 2023 Global Journals 1 Year 2023 66 Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( H )