It is at the barrages that the canals taking off from them deplete the rivers. On the Indus river, there are 5 canals in Punjab taking off from Jinnah, Chashma and Taunsa barrages. In Sindh there are 15 canals taking off from Guddu, Sukkur and Kotri barrages. In fact the flow to the Indus delta decreased to the present low level when Kotri barrage was built and four canals taken off from it. No reduction can be made in the number of these canals which are essential for the ever growing demand for irrigation water for Punjab, Sindh and Balochistan. However, a better managed and more efficient irrigation system can bring improvement in the ratio between water-input and crop-yield, which is very poor at present.
Lahore, January 15.