Research on the floristic formation of Glycerietum maximae community under influence of a habitat in the valley of Noteć Leniwa, was conducted in the years 2013 and 2014 on the area of 60 ha. In the community, the following parameters were determined: systematics, botanical composition, distribution of constancy levels in an association and a current state of habitat conditions on the basis of Ellenberg’s indicative numbers, and identification of moisturization conditions with Oświt’s method. Two soil profiles were completed (of a peaty soil and a mucky one). In the samples collected from each genetic horizon, such properties were marked: pH, content of total nitrogen calcination loss, texture, bulk density and particle density, hygroscopic moisture and maximum hygroscopic capacity, soil’s water bonding potential, total and drainage porosities, total and readily available waters and filtration ratio. The investigated soils were rich in organic matter, had a favorable reaction and a satisfactory content of nitrogen. Their water permeability may be considered as optimal and retention values - good. At balanced utilization, natural evolution-degradation processes will proceed with a natural pace. The soils are a very favorable ground for the development of valuable plant communities.