The article provides information on the formation of hydromorphic soils of the Mirzachol oasis, their properties and characteristics. The properties of soils located in one massif, but located on different terraces of the river, were compared. The credit score of massive soil fractions is determined. For soil quality assessment, mechanical composition is taken as the main scale, and correction coefficients for other properties are included. Soil quality assessment materials are used for crop placement, yield planning and tax rate determination. Keywords: water level, gray soil, meadow-gray soil, meadow soil, soil salinity, soil mechanical composition, soil differences, quality assessment, humus, phosphorus, potassium.