WATER QUALITY MAPPING OF DISTRICT CHINIOT, PAKISTAN BY USING GIS

Key words: GIS mapping, water quality, Piper diagram Introduction Agriculture is the main source of provision of food in of Pakistan. Since surface water is not sufficient for irrigation, farmers have to rely on the subsurface groundwater for irrigation. [...]of this haphazard extraction, groundwater is being depleted and deteriorating quality of water. According to EC of current area Beans (according to USDA classification declared sensitive, require EC 0-2 dS/m) can also be cultivated besides other crops. The presence of Na in the environment and its uptake by plants can reduce the amount of K required to meet the plants basic metabolic requirements. [...]in the presence of Na, the critical level of K can be reduced (the lowest tissue K level at which 95% of the maximum yield can be achieved).