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Detailed Ecological Assessment Report 2008 – Keenjhar Lake These areas provide vital nurseries for fisheries that support global communities and often shelter biodiversity of global importance by virtue of being, in general, relatively undisturbed ecosystems. The loss of these ecosystems would therefore suggest potential local, national and global welfare losses. Yet, quantifying those losses in as accurate a manner as possible, and actually using them to make more informed decisions about land use and land conversion, is a task of phenomenal proportions. Economic values associated with healthy mangrove ecosystems can however be generated through economic analysis that attempts to measure the use and non-use values of these ecosystems. Coastal areas of Pakistan in common and Keti Bunder and its adjoining areas in particular are highly modified landscapes, supporting large, and of course, poor populations. These areas are under enormous pressures of all sorts not only because of the large numbers of inhabitants who depend on the resources from these areas, but more so because of indiscriminate conversion of these areas to other land uses. 3.8 Physico-chemical properties of water 3.8.1 Sample locations Map 12 shows the sampling locations of water quality for Keti Bunder. Details of sampling points can be found in the annexure document. Map 12 – sampling locations for water quality sampling WWF Pakistan – Indus for All Programme Page 111 of 188
Detailed Ecological Assessment Report 2008 – Keenjhar Lake 3.8.2 Field observations during water sampling Keti Bunder is connected with nearby cities by road. Keti Bunder study area can be divided in to two parts; (1) Keti Bunder Town area where people are living and (2) creeks area where livelihood is dependent. The town area gets drinking water from a distance of about 10 Km through hired water tankers. Town waste water is collected in to the cemented tank and pumped into Hajamro creek area. This creek also gets agriculture drainage from the adjacent irrigated area. People living in the surrounding areas of the creeks were found mostly engaged in fishing. The living conditions of people are very hard; health, education and drinking water are the core issues of the area. During the pre monsoon visit, the high tide raised the water level in surface drains in the Keti Bunder town area. The over cutting of mangrove trees for fuel and fodder is widespread, as there is no other cheap and easily available source of food and energy for the community living in the creek area. 3.8.3 Results The data set of Keti Bunder study area is presented in two parts. Set one represents Keti Bunder Town area and set two represents creeks containing fishery and mangrove forest. The water quality data obtained in the month of July-2007 (pre monsoon) and in October/November 2007 (post monsoon) is shown in the annexure document. Table 23 – Water quality parameters found in Keti Bunder town pre monsoon & Post monsoon Parameters Pre Monsoon Post Monsoon 1 Temperature 30-32 o C 25-29 o C 2 Electrical 47200-52700 µS/cm 1502-48400 Conductivity µS/cm. 3 TDS 30208-33728 ppm 962-36608 ppm 4 pH 7.93-8.81 7.16-8.00 5 Turbidity 13.2-471 12.7-94.0 6 Total Hardness 5504-5804 ppm 300-5000 ppm 7 Calcium 900-1100 ppm 100-1000 ppm 8 Magnesium 4604-4704 ppm 200-4200 ppm 9 Sulphate 1650-1780 ppm 100-13380 ppm 10 Chlorine 18000-20000 ppm 350-20000 ppm 11 Alkalinity 113-113 ppm. 120.0-898.0 ppm. 12 Phenols 34 ppb 34-340ppb 13 Cr 10.44-41.32 ppb 3.53-12.64 ppm 14 Pb 16.20-17.20 ppb 8.08-75.84 ppm 15 Cd 2.20-2.92 ppb. 11.2-64.0 ppb 16 Ni 6.5-7.8 ppm 12.2-35.21 ppb 17 BOD 3.05-8.75 ppm 0.53-12.4 ppb 18 COD 9.2-51.5 ppm 1.9-25.9 ppm WWF Pakistan – Indus for All Programme Page 112 of 188
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Disclaimer note - WWF - Pakistan

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