The article proposes the construction of a new generation rice card. The results of a new generation rice card’s construction and operation in “Agrofirm Achuyevskaya” LLC in the Slavyansk region of the Krasnodar Territory are presented. This map makes it possible to highly efficiently control the groundwater level, which, in turn, allows to maintain the required parameters of soil moisture with the necessary and sufficient accuracy. A mathematical model to reduce the price of rice irrigation system construction has been developed, based on the integrated approach to the managerial decisions’ formation in the process of choosing the best option for the construction of an ameliorative system with predicted system’s operational parameters. It helps to quantify the influence strength and direction of the factors taken into account, to perform the multivariate forecast calculations based on the resources available at the construction time, scientific and technical level, construction technologies and materials. The economic effect of this rice map introduction made it possible to increase the yield of green mass of alfalfa to 650 c / ha, and corn to 720 c / ha. An increase in rice crop and the associated rice crop rotation was obtained. The decrease in groundwater levels has improved the ecological and reclamation condition of the rice fields’ soils. Optimization of the managerial decision-making process during the irrigation system construction allowed to reduce the amount of labor costs by 5%, energy resources by 20%. The increase in rice yield amounted to 15%, while reducing its cost by 5%.