Table 3.

Chamo Lake water samples analytical data in both the dry and wet seasons.

Parameter	Chamo Lake water quality analytical results at five sampling points
CH-01		CH-02		CH-03		CH-04		CH-05
Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet
Temp (°C)	32.30 ± 0.49	22.7 ± 0.59	32.20 ± 0.49	23.0 ± 0.59	32.30 ± 0.49	22.70 ± 0.59	32.30 ± 0.49	23.0 ± 0.59	31.3 ± 0.49	22.6 ± 0.59
pH	9.10 ± 0.19	8.90 ± 0.26	9.20 ± 0.19	9.00 ± 0.26	9.20 ± 0.19	9.00 ± 0.26	9.20 ± 0.19	9.00 ± 0.26	9.30 ± 0.19	9.00 ± 0.26
EC (μS/cm)	1,702 ± 10.86	1,409 ± 2.75	1,705 ± 10.86	1,408 ± 2.75	1,692 ± 10.86	1,411 ± 2.75	1,715 ± 10.86	1,407 ± 2.75	1,708 ± 10.86	1,404 ± 2.75
TDS (mg/l)	1,087 ± 5.45	702 ± 2.9	1,089.5 ± 5.45	704 ± 2.9	1,082 ± 5.45	705.5 ± 2.9	1,093.5 ± 5.45	703.5 ± 2.9	1,090 ± 5.45	699 ± 2.9
Total hardness (mg/l)	60 ± 2.6	60 ± 8.03	56 ± 2.6	50 ± 8.03	54 ± 2.6	70 ± 8.03	56 ± 2.6	50 ± 8.03	54 ± 2.6	74 ± 8.03
Total alkalinity as CaCO3 (mg/l)	730 ± 34.8	630 ± 18.6	650 ± 34.8	640 ± 18.6	750 ± 34.8	660 ± 18.6	716 ± 34.8	660 ± 18.6	768 ± 34.8	678 ± 18.6
NO3-N (mg/l)	1.30 ± 0.26	1.24 ± 0.13	0.67 ± 0.26	0.94 ± 0.13	0.92 ± 0.26	0.90 ± 0.13	0.76 ± 0.26	0.90 ± 0.13	0.74 ± 0.26	0.95 ± 0.13
PO43−‐P (mg/l)	0.82 ± 0.10	0.39 ± 0.04	0.89 ± 0.10	0.31 ± 0.04	0.98 ± 0.10	0.30 ± 0.04	0.91 ± 0.10	0.31 ± 0.04	1.10 ± 0.10	0.34 ± 0.04
NH3-N	23.80 ± 2.8	14.00 ± 3.29	19.60 ± 2.8	16.80 ± 3.29	23.80 ± 2.8	15.40 ± 3.29	16.80 ± 2.8	14.25 ± 3.29	21.00 ± 2.8	19.60 ± 3.29
Chloride (mg/l)	234.00 ± 3.75	200.7 ± 3.41	238.0 ± 3.75	192.7 ± 3.41	231.00 ± 3.75	196.70 ± 3.41	231.00 ± 3.75	196.70 ± 3.41	238.00 ± 3.75	191.67 ± 3.41
Sulfates (mg/l)	45.00 ± 2.09	58.72 ± 8.95	42.00 ± 2.09	39.15 ± 8.95	41.00 ± 2.09	38.30 ± 8.95	43.00 ± 2.09	58.72 ± 8.95	45.00 ± 2.09	37.45 ± 8.95
Calcium (mg/l)	14.00 ± 1.04	20.40	14.40 ± 1.04	22.03	14.00 ± 1.04	22.85	14.00 ± 1.04	22.08	16.00 ± 1.04	21.22
Magnesium (mg/l)	11.30 ± 0.85	9.62 ± 2.22	10.10 ± 0.85	6.80 ± 2.22	10.00 ± 0.85	11.46 ± 2.22	10.30 ± 0.85	11.46 ± 2.22	9.20 ± 0.85	12.83 ± 2.22
Iron (mg/l)	0.64 ± 0.05	0.42 ± 0.04	0.55 ± 0.05	0.32 ± 0.04	0.57 ± 0.05	0.35 ± 0.04	0.53 ± 0.05	0.42 ± 0.04	0.54 ± 0.05	0.31 ± 0.04
DO (mg/l)	5.28 ± 0.26	6.70 ± 0.20	5.20 ± 0.26	6.67 ± 0.20	5.52 ± 0.26	6.65 ± 0.20	5.25 ± 0.26	6.67 ± 0.20	5.32 ± 0.26	6.63 ± 0.20
COD (mg/l)	104.00 ± 6.2	66.00 ± 3.97	92.00 ± 6.2	64.00 ± 3.97	106.00 ± 6.2	76.00 ± 3.97	102.00 ± 6.2	64.00 ± 3.97	92.00 ± 6.2	70.00 ± 3.97
BOD5 (mg/l)	38.52 ± 2.29	25.38 ± 1.44	36.28 ± 2.29	24.61 ± 1.44	37.14 ± 2.29	25.23 ± 1.44	35.00 ± 2.29	24.41 ± 1.44	36.00 ± 2.29	26.72 ± 1.44
Chlorophyll-a (μg/l)	31.87 ± 3.88	33.28 ± 2.88	25.17 ± 3.88	27.43 ± 2.88	24.65 ± 3.88	26.73 ± 2.88	26.65 ± 3.88	28.38 ± 2.88	19.64 ± 3.88	31.87 ± 2.88
Salinity (%)	0.92 ± 0.01	0.70 ± 0.01	0.93 ± 0.01	0.7 ± 0.01	0.91 ± 0.01	0.70 ± 0.01	0.93 ± 0.01	0.7 ± 0.01	0.93 ± 0.01	0.70 ± 0.01