The ieu river, a tributary of the Some u Mare river, streams from the north – eastern end of the C limani mountains, at the contact between the peaks of the C liman Mountains and the Bistri a Depression, under the C liman piedmont. The genesis and spatial development of the ieu river basin is the result of its position in the northern extremity of the Transylvanian Depression, but also of the Transylvanian – Pannonian micro-board mobility, which generated a series of changes of the subsidence areas in the lower sector of the ieu River. The relief of the Transylvanian Depression, by its actual appearance, is but a short sequence of the series of geomorphological changes. Distinguishing them may follow different paths depending on the purpouse, requirements and possibilities, one of which is represented by the analysis of the morphogenetic manifestation in the valley – slope systems, based on methodological support provided by functional geomorphology. Attention will be directed to the S r el sector – the juncture with the Some u Mare river, where contemporary alluvial processes (alluvial bed elevation, the presence of sloughing sectors) the appearance of sectors due to the saliferous Quaternary neotectonics, the agrotecnical exploitation of land use, contribute to changes in the report of the slope – valley system. In this fluvial geomorphology study the spatio – temporal frame of the analysed system accounts for 268 km2, of a total of 1691 km2. The alternation of some saliferous horizons (the S rata and S r el Valleys) with other more friable ones (clays, marls, gravel) in addition to the fact that it is fully visible, it induces differentiations even in the water bed, valley sectors. The emergence of a series of wide NV–SE axial – plane separations: the Sl tini a anticline, the T rpiu synclinal, confer unicity to the sector.