Аннотация:Abstract—Northern Uvaly dark-humus soils and agrozems, which formed on Triassic clay deposits, are examined. Their hydromorphic nature is identified based on determination of their organic matter properties. Nonconformity of the hydromorphic features to the current moisture conditions is found, which indicates the residual character of hydromorphism and confirms the concept that the territory of the Uvaly was uplifted during the Holocene