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Detailed Ecological Assessment Report 2008 – Keenjhar Lake The water quality of Bakar Lake in terms of TDS, Phenol and Lead is suitable for fish development. However, the DO is at the marginal level and fluctuates around 2.0 mg/l. The water quality of Dongrion and Patherio Lakes is hazardous for fishery in light of above parameters. • Pai Forest The Samano Rahoo Lake is an artificial lake in the project area which, support the livestock, wild life and fisheries in Pai Forest. This lake receives fresh water intermittently from the canal supplies. The samples taken from the lake prior to monsoon indicate acceptable quality, (in terms of TDS, Phenol and Lead) for fisheries, as reported by Pescode (1977) and livestock as per FAO guidelines. In June 2007, before monsoon Samano Rahoo Lake was full, while after monsoon, surprisingly the lake had less water, there was no flow from the watercourse. This also indicates that there is no significant role of rain water. The water which was available in the lake after the monsoon period is in fact the seepage water coming from the adjacent agricultural lands. Because of the seepage in the lake, the magnesium and calcium salts level (of sulphates, chlorides) has increased after monsoon (sample PF-A3). The turbidity, phenol and other metals, except the Chromium, also were found high in the lake. The lake is only surface water available to livestock and wild life of Pai Forest. The frequent entry of livestock into the lake for drinking and resting resulted in erosion of lake banks, causing high turbidity. The plant tree leaves and washing materials (detergents, etc) used by women along the lake may be the cause of phenol based substances. There is no industry or visible source of metallic pollution. The inherent Indus River pollution due to the upstream human activities may be one cause of lake contamination. • Keti Shah The Shah Belo Lake is connected with the Indus river upstream of Sukkur Barrage and moves through the forest, having high quality of water for fish, wild life and livestock. This and river Indus samples show the dissolve oxygen is between 1-2.6 mg/l, which is low , as normally more than 4 mg/l DO is required for the sustenance of the fisheries. The values of TDS, Phenol and Lead are within the acceptable range, as proposed by Pescode WWF Pakistan – Indus for All Programme Page 157 of 188
Detailed Ecological Assessment Report 2008 – Keenjhar Lake Table 51 – water quality parameters over site and season Keti Bunder Keenjhar Lake Chotiari Pai Forest Keti Shah Parameters Pre monsoon Post monsoon Pre monsoon Post monsoon Pre monsoon Post monsoon Pre monsoon Post monsoon Pre monsoon Post monsoon Temperature 25-29oC 30-32oC 30-32oC 25-29oC 30-32oC 25-29oC. 30-32oC. 25-29oC. n/a 25-29oC. Electrical Conductivity 1502-48400 µS/cm. 47200-52700 µS/cm 490-587 µS/cm 529-674 µS/cm, 553-39500 µS/cm WWF Pakistan – Indus for All Programme Page 158 of 188 571-15400 µS/cm. 772-810 µS/cm. 760-3430 µS/cm n/a 287- 427µS/cm. TDS 962-36608 ppm 30208-33728 ppm 314-376 ppm 356-432 ppm 354-25280 ppm 366-9856 ppm 490-519 ppm. 495-2196 ppm n/a 184-274 ppm pH 7.16-8.00 7.93-8.81 6.96-8.49 8.00-8.31 7.3-8.9 7.20-8.36 7.62-8.47 7.43-7.94 n/a 7.50-7.80 Turbidity 12.7-94.0 13.2-471 0.73-8.14 3.11-97.2 0.83-17.5 NTU 2.00-40.0 4.04-188 NTU 3.10-833 NTU n/a 1.50-400 NTU Total Hardness 300-5000 ppm 5504-5804 ppm 120-155 ppm 60-127 ppm 100-3450 ppm 105-3000 ppm 190-250 ppm 150-444 ppm n/a 60-120 ppm Calcium 100-1000 ppm 900-1100 ppm 72-80 ppm 25-45 ppm 50-1600 ppm. 40-310 ppm. 110-170 ppm 75-144 ppm n/a 30-80 ppm Magnesium 200-4200 ppm 4604-4704 ppm 43-80 ppm 35-89 ppm 40-3400 ppm 65-2690 ppm 140 ppm. 75-300 ppm n/a 30-47 ppm Sulphate 100-13380 ppm 1650-1780 ppm 14-24 ppm 80-170 ppm 75-3450 ppm. 62-1125 ppm 75-175 ppm. 100-1150 ppm n/a 10-55 ppm. Chlorine 350-20000 ppm 18000-20000 ppm 28.9-63.5 ppm 50-106 ppm 150-14000 ppm. 100-2250 ppm 29.8-97.3 ppm 55-350 ppm n/a 24-54 ppm Alkalinity 120.0-898.0 113-113 ppm. 91.5-109.8 30-40 ppm 30-330 ppm 80-460 ppm. 40-110 ppm. 73-123 ppm. n/a 35-70 ppm ppm. ppm Phenols 34-340ppb 34 ppb 1.7-3.57ppb 3.4-15.3 6.8-510ppb 5.1-74.8ppb 8.5-17ppb 8.5-51.0 ppb n/a 8.5-8.5ppb Cr 3.53-12.64 ppm 10.44-41.32 ppb 9.3-33.29 ppb 6.4-20.8 ppb n/a 30-72.6 ppb 53.92-56.02 ppb 23.3-53.9 ppb n/a 8.99-15.9 ppb Pb 8.08-75.84 ppm 16.20-17.20 ppb 5.19-10.11 ppb 10.93-20.63 n/a 6.82-14.6 ppb 23.70-27.50 9.65-13.06 n/a 21.31-33.85 ppb ppb. ppb. ppb. Cd 11.2-64.0 ppb 2.20-2.92 ppb. 4.28-9.16 ppb 0.61-4.74 ppb n/a 0.66-2.45 ppb. 20.05-21.77 ppb. 0.28-0.98 ppb. n/a 1.95-5.75 ppb Ni 12.2-35.21 ppb 6.5-7.8 ppm 7.73-9.82 ppm 0.93-1.73 ppm n/a 2.32-9.59 ppm 17.05-19.75 ppm 3.48-27.9 ppm n/a 0.82-1.73 ppm BOD 0.53-12.4 ppb 3.05-8.75 ppm 5.06-10.1 ppm 1.00-6.07 ppm n/a 1.76-4.58 ppm n/a n/a n/a 1.26-1.52 ppm COD 1.9-25.9 ppm 9.2-51.5 ppm 12.64-16.43 5.05-12.13 n/a 5.16-11.15 ppm n/a n/a n/a 8.85-19.10 ppm ppm ppm Arsenic n/a n/a n/a n/a n/a 25-50 ppb 30-77 ppb 25-75 ppb n/a DO n/a n/a n/a n/a 0.18 mg/l to 4.92 1.5 to 3.2 mg/l n/a n/a n/a 1.4 -2.3 ppm Nitrates n/a n/a n/a n/a n/a 0.182 mg/l. and 0.345 n/a n/a n/a n/a Phosphate n/a n/a n/a n/a n/a 0.42 and 0.52 mg/l. n/a n/a n/a n/a
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