Tenth International Conference on The Constructed Environment

Abstract

Agriculture is the backbone of Pakistan’s economy. In division Bahawalpur, containing three districts, there is a network of canals. The present study is confined to twenty-three lined channels, four of which are major distributaries. They were selected to observe the effect of canal lining on ground water quality and depth to water table. Three irrigation parameters for groundwater quality were selected to study its effects from the year 2007 to 2013. ArcGIS was used to determine the trend of these parameters and depth to water table across the division from unlined zone to lined zone. Depth for water table was studied from year 2007 to 2018. Comparison of Pre-Monsoon and Post Monsoon Recharge along the lined channels was observed. Piezometers within the 25km of the canal command area using proximity analysis were selected for applying interpolations. Heavy monsoons of year 2010 and 2014 contributed to the repletion of water table. A comparison of, before and after lining, was also made to determine the trend for depth to water table as well as irrigation water quality parameters.