Irrigation and Flood Control Department 
Details of Flood Control schemes including short terms & long terms measures and approved outlays of 11th Five Year Plan (2007-12).
The National Capital Territory of Delhi has been experiencing floods, mainly from Sahibi Nadi (passing through Najafgarh Drain in Delhi) and Yamuna River. Local drainage system has also been found to be inadequate to meet the requirement whenever there is heavy rainfall in the catchment of these drains or during in flow of flood water from adjoining states in Yamuna river. Several flood mitigating measures like raising and strengthening of Yamuna marginal embankments, remodelling and lining of Najafgarh Drain for a discharge of 10,000 cusecs from Kakraula regulator to its outfall into river Yamuna, strengthening of Dhansa Bund, Construction of Supplementary drain to Najafgarh Drain to cater to excessive in-flow of flood discharge in the Najafgarah Drain have been taken up over the years so that there is no repetition of flood like the one experienced in Najafgarh drainage system in 1997 and in Yamuna river during the year 1997-98.
The marginal embankments along Yamuna river in Delhi can with stand a discharge upto 2.5 lakh cusecs in the river against the requirement of 3.5 lakh cusescs for a flood frequency of one in hundred year as is suggested by Central Water Commission, Govt. of India. The work relating to construction of Supplementary drain to Najafgarh Drain is likely to be completed in the current Five Year Plan. So far, 82% of the works on this project has been completed.