The study was conducted in the command area of distributory no-5 of Mandhar branch canal in Raipur (Chhattisgarh). This area comes under Chhattisgarh plain. Paddy and soybean was the main crops during kharif season. But Arhar and urd was also considered in the study as per the livelihood crops for the farmers that are used in their daily food routine. Conjunctive use of water resource had been optimized by using LP problem. The decision regarding the selection of the crop in kharif season indicates that to achieve maximum profit under the constraints, paddy should be grown on 3208.36 ha of land out of which 17% for broadcasting and 83% for transplanting method. About 2.82, 0.70, 24 and 3.52% of net sown area would be used for arhar, urd and soybean production respectively to get maximum net profit.