The study attempts to assess the present state of the resources and quality of water in small rivers that drain the area of the junction of two motorways, A1 and A2, being under construction nearby Łódź. In order to describe the physicochemical properties of surface waters in the area threatened with changes in the hydrological and hydrochemical regime, flow intensity and water reaction (pH), conductivity, oxygen content and temperature were measured in permanent cross-sections during two years (O₂ during one year) at 2-week intervals. The underground component of the outflow was also estimated. It was found that nearly all the rivers (except one) have quasi-natural regimes and the quality of water is high (class I and II). The seasonal pattern of water temperature variation can be treated as a basis for determining whether, and to what extent, the other characteristics of water in the rivers display a seasonal pattern of changes.

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