Research Article
Study on Irrigation Water Quality in the Rift Valley Areas of Awash River Basin, Ethiopia
Table 6
Seasonal variation of Ca + Mg (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 | 5.50 | 3.00 | 3.00 | 5.00 | 5.21 | 2.12 | 4.50 | 8.00 | 3.00 | 4.50 | 5.00 | 2.00 | 2.50 | 6.10 | 4.00 | 5.80 | 5.90 | | Season 2 | 6.00 | 6.50 | 5.50 | 6.00 | 5.50 | 7.60 | 8.50 | 2.00 | 5.50 | 6.00 | 5.00 | 11.00 | 3.15 | 8.50 | 4.10 | 11.50 | 8.20 | | Season 3 | 6.25 | 5.85 | 5.70 | 5.80 | 6.24 | 2.20 | 6.65 | 1.75 | 5.55 | 5.30 | 4.45 | 7.35 | 2.09 | 6.20 | 4.65 | 7.85 | 6.70 | | Season 4 | 6.50 | 5.20 | 5.90 | 6.20 | 5.62 | 7.30 | 4.80 | 1.50 | 5.60 | 4.60 | 3.90 | 3.70 | 1.02 | 3.90 | 5.20 | 4.20 | 3.80 | | 2017/18 | Season 1 | 3.20 | 6.74 | 4.80 | 5.10 | 4.56 | 1.95 | 3.40 | 1.10 | 3.02 | 3.20 | 5.21 | 2.37 | 2.49 | 4.60 | 3.98 | 4.46 | 3.42 | | Season 2 | 3.30 | 5.22 | 4.70 | 3.85 | 3.43 | 2.33 | 2.80 | 1.00 | 2.56 | 2.80 | 3.66 | 2.49 | 1.60 | 3.10 | 4.00 | 3.58 | 2.96 | | Season 3 | 3.40 | 3.70 | 4.60 | 2.60 | 2.30 | 2.70 | 2.20 | 0.90 | 2.10 | 2.40 | 2.10 | 2.60 | 0.70 | 3.20 | 4.02 | 2.70 | 2.50 | | Season 4 | 3.40 | 1.50 | 0.90 | 1.80 | 1.80 | 1.50 | 1.60 | 0.10 | 1.00 | 1.00 | 1.20 | 1.90 | 0.20 | 2.10 | 1.50 | 2.10 | 1.80 | | 2018/19 | Season 1 | 3.40 | 1.30 | 1.00 | 0.80 | 1.30 | 1.70 | 1.20 | 0.40 | 1.00 | 1.50 | 1.50 | 1.50 | 0.10 | 2.00 | 1.60 | 1.40 | 3.30 | | Season 2 | 3.81 | 2.59 | 2.36 | 1.41 | 1.77 | 1.99 | 2.05 | 0.60 | 1.56 | 1.67 | 1.66 | 1.85 | 0.23 | 2.45 | 1.85 | 1.83 | 2.57 | | Season 3 | 3.90 | 3.87 | 3.71 | 2.01 | 2.23 | 2.28 | 2.90 | 0.80 | 2.11 | 1.84 | 1.82 | 2.19 | 0.35 | 2.89 | 2.10 | 2.25 | 1.83 | | Season 4 | 3.99 | 3.10 | 2.60 | 2.31 | 2.22 | 2.15 | 2.42 | 0.56 | 1.92 | 2.18 | 2.14 | 2.24 | 0.50 | 5.16 | 2.37 | 2.30 | 2.39 | | Mean | 4.39 | 4.05 | 3.73 | 3.57 | 3.51 | 2.98 | 3.59 | 1.56 | 2.91 | 3.08 | 3.14 | 3.43 | 1.24 | 4.18 | 3.28 | 4.16 | 3.78 | | Min | 3.20 | 1.30 | 0.90 | 0.80 | 1.30 | 1.50 | 1.20 | 0.10 | 1.00 | 1.00 | 1.20 | 1.50 | 0.10 | 2.00 | 1.50 | 1.40 | 1.80 | | Max | 6.50 | 6.74 | 5.90 | 6.20 | 6.24 | 7.60 | 8.50 | 8.00 | 5.60 | 6.00 | 5.21 | 11.00 | 3.15 | 8.50 | 5.20 | 11.50 | 8.20 | | SD | 1.28 | 1.85 | 1.75 | 1.97 | 1.80 | 2.11 | 2.18 | 2.10 | 1.72 | 1.64 | 1.54 | 2.84 | 1.08 | 1.99 | 1.30 | 2.97 | 2.05 |
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