In terms of the mutual arrangement of individual properties, alluvial soils are unpredictable and do not fit into the regularities most often found in arable soils. Often, soil density does not increase with the sampling depth, and the carbon content in endopedons is irregularly distributed, in line with the quality of alluvial deposits. These soils may react differently to the lowering of the groundwater table, especially in the case of fine textured and very fine textured alluvial soils. The paper presents selected physical and water properties of fine textured alluvial soils in the middle proglacial stream valley of the Warta River (central Poland, near Koło). Seven soil profiles were made. During field studies, taxonomic and soil suitability classifications of the analyzed soils were carried out. These were: humic proper alluvial soils, typical humic alluvial soils, and rusty humic alluvial soils. The investigated soils were occupied by grasslands of the 4th and 5th valuation class. The following properties were determined: texture, organic matter content, content of total carbon and total nitrogen, particle density, bulk density, total and drainage porosity, saturated hydraulic conductivity, moisture at particular soil water potentials, total and readily available water, soil reaction in H2O and in KCl. Most of them were strongly influenced by the alluvial genesis of the studied soils, and more specifically - the type and nature of the river deposits that formed the individual genetic horizons, yet they can be considered as characteristic of cultivated soils with a similar texture, occurring in the Central Polish Lowlands. The susceptibility of these soils to drainage degradation was determined due to their location in the marginal zone of the depression cone of the lignite mine "Drzewce". It was found that the top horizons of these soils has undergone the decession process due to their natural and meliorative drainage in the past. Therefore, such soils cannot be subject to drainage mine productivity degradation.