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

Table 5

Seasonal variation of Na (meq/L) for three years (2016/17–2018/19) across different locations.

Year	Season	Locations
		Akaki	Mojo	Koka	Wonji	Melkasa	Tibila	Metehara	Beseka	Melkasedi	Werer	Ambash	Meteka	Meteka hot spring	Mille	Dupty	Assayta	Afambo
2016/17	Season 1	2.26	1.67	2.44	3.65	4.17	1.21	3.51	31.59	3.27	5.17	7.89	3.46	5.56	3.95	5.16	4.02	4.17
	Season 2	7.60	6.24	3.60	4.44	4.37	2.70	4.59	36.96	4.37	5.69	6.18	5.40	6.61	5.35	6.14	5.22	5.76
	Season 3	5.00	6.30	2.75	4.47	4.38	2.10	4.79	37.17	4.75	6.66	7.20	5.65	8.13	5.52	6.59	5.56	5.69
	Season 4	2.39	6.35	1.90	4.49	4.39	2.80	4.98	37.89	5.12	7.63	8.21	5.89	9.65	5.68	5.83	5.89	5.62
2017/18	Season 1	2.44	11.21	2.26	13.58	1.94	1.87	5.63	21.59	4.66	5.84	5.92	3.57	6.95	1.49	3.71	3.76	3.73
	Season 2	1.90	8.00	2.97	7.56	1.64	2.11	3.61	22.73	6.49	8.12	8.01	6.73	8.71	2.62	3.88	3.94	3.99
	Season 3	1.35	4.79	3.68	1.53	1.34	2.22	1.58	23.87	8.31	10.40	10.10	9.89	10.46	3.75	4.05	4.11	4.24
	Season 4	1.82	0.53	1.53	1.33	1.63	2.15	1.53	21.39	4.21	5.99	5.89	4.60	9.17	1.93	4.31	3.41	2.92
2018/19	Season 1	1.34	1.10	1.12	1.11	0.91	1.13	1.12	19.03	1.28	1.31	1.18	1.36	7.24	0.73	0.82	0.92	1.13
	Season 2	1.74	1.66	1.43	1.88	0.94	1.41	1.25	19.24	2.40	3.70	1.59	2.18	7.84	1.24	1.35	1.40	1.50
	Season 3	3.05	2.22	1.74	3.74	0.96	1.59	1.47	21.44	3.52	6.09	3.00	2.83	8.48	1.74	1.87	1.87	1.87
	Season 4	4.35	4.35	2.17	2.17	2.90	2.90	2.90	27.54	7.97	10.87	7.97	7.25	11.60	5.80	5.80	5.80	5.80
Mean		2.94	4.53	2.30	4.16	2.46	2.02	3.08	26.70	4.70	6.46	6.09	4.90	8.37	3.32	4.13	3.82	3.87
Min		1.34	0.53	1.12	1.11	0.91	1.13	1.12	19.03	1.28	1.31	1.18	1.36	5.56	0.73	0.82	0.92	1.13
Max		7.60	11.21	3.68	13.58	4.39	2.90	5.63	37.89	8.31	10.87	10.10	9.89	11.60	5.80	6.59	5.89	5.80
SD		1.85	3.24	0.83	3.50	1.48	0.60	1.66	7.29	2.09	2.63	2.80	2.41	1.70	1.92	1.93	1.69	1.70