This document discusses water logging as an ill effect of irrigation. It defines water logging and provides statistics on its prevalence in India. The main effects of water logging are reduced aeration of soil, difficulty in cultivation, growth of weeds, and increased soil salinity. Water logging is caused by seepage from canals, over-irrigation, lack of drainage, and obstruction of natural drainage paths. Prevention methods include reducing percolation from irrigation sources, encouraging efficient water use, and increasing groundwater outflow through drainage systems. A case study showed large reductions in cotton and wheat yields on a farm affected by water logging. The conclusion advocates for preventative measures against water logging under government programs.