Study on Irrigation Water Quality in the Rift Valley Areas of Awash River Basin, Ethiopia

Table 10

Mean values of three-year irrigation water quality parameters of Awash River water.

Locations	Quality parameters (EC (dS/m), Na^+, K^+, Ca + Mg, CO3^2−, HCO3^−, Cl^−, RSC (meq/L))
	pH	ECw	Na	K	Ca + Mg	CO3^2−	HCO3^−	Cl^-	SAR	RSC	SSP	KR	%Na
Akaki	7.68	0.65	2.94	0.21	4.39	1.19	3.51	6.41	1.94	0.31	39.92	0.65	36.72
Mojo	7.88	0.98	4.53	0.32	4.05	2.48	7.77	4.02	2.96	5.17	49.72	1.01	46.37
Koka	7.93	0.65	2.30	0.22	3.73	1.85	4.41	1.74	1.76	2.22	42.87	0.74	39.13
Wonji	8.01	0.86	4.16	0.20	3.57	1.51	5.79	5.79	3.04	3.35	52.41	1.20	50.14
Melkassa	8.06	0.51	2.46	0.17	3.51	1.41	3.93	1.51	1.80	1.71	42.18	0.70	38.75
Tibila	7.82	0.53	2.02	0.13	2.98	0.82	5.11	1.72	1.77	2.95	44.87	0.82	42.00
Metehara	7.83	0.62	3.08	0.12	3.59	1.70	4.87	1.57	2.29	2.56	47.44	0.91	45.22
Beseka	9.30	3.78	26.70	0.51	1.56	11.35	22.69	8.67	41.03	32.48	95.29	42.28	93.29
Melkasedi	8.31	0.89	4.70	0.17	2.91	2.78	9.22	9.22	4.24	9.09	62.90	2.04	60.27
Werer	8.33	0.87	6.46	0.16	3.08	1.43	6.72	3.26	5.64	4.87	67.46	2.62	65.53
Ambash	8.28	0.88	6.09	0.16	3.14	1.47	9.54	3.00	5.05	7.88	64.97	2.22	62.59
Meteka	8.22	0.78	4.90	0.16	3.43	2.48	6.38	2.28	4.10	5.44	60.83	1.80	58.49
Meteka hot spring	8.63	1.23	8.37	0.21	1.24	2.45	7.43	4.28	16.13	8.59	87.33	20.12	85.19
Mille	8.00	0.57	3.32	0.06	4.18	1.78	4.72	1.45	2.24	2.01	42.86	0.79	41.90
Dupty	8.14	0.74	4.13	0.09	3.28	1.46	5.20	2.15	3.21	3.28	54.42	1.31	52.92
Assayta	8.12	0.74	3.82	0.07	4.16	2.23	5.62	2.24	2.79	3.45	50.03	1.09	48.74
Afambo	8.12	0.75	3.87	0.08	3.78	1.76	4.76	1.99	2.91	2.55	51.13	1.16	49.96
Min	7.68	0.51	2.02	0.06	1.24	0.82	3.51	1.45	1.76	0.31	39.92	0.65	36.72
Max	9.30	3.78	26.70	0.51	4.39	11.35	22.69	9.22	41.03	32.48	95.29	42.28	93.29