A massive drive is being launched to remove encroachments and other infringements and violations on Dal and Nigeen lakes and other water bodies in and around Srinagar, chief minister Ghulam Nabi Azad announced here on Saturday. Also, a campaign will be launched from January next year to retrieve about 2.5 lakh acres of state land, costing more than Rs 25,000 crores, currently under illegal occupation across Jammu and Kashmir.