The article is based on the fact that the sustainable development of agriculture largely depends on the rational and efficient use of land and water resources in the production of this sector. For the first time, a theoretical approach was taken to the analysis of the activities of irrigation and land reclamation entities on irrigated lands. Based on the views of scientists, the essence and main directions of irrigation services and reclamation measures have been developed. Econometric formulas have been developed to assess the effect of changes in distributed crop areas on water consumption depending on the depth of groundwater and changes in distributed crop areas on water consumption based on the salinity of groundwater.