The paper reports, in short, the researches conducted in the instrumented basin of the Rio Cordon, a small catchment of the Dolomites (North-eastern ltaly), which drains an area of 5 km². The physical conditions of the basin are shortly outlined and an analysis of morphometric and thematic characteristics carried out by means of a Geographical Information System is included. Based on the data collected during the early years of observation a description is given of the hydrological and sediment transport behaviour in the watershed. As to hydrology, runoff regime is characterised by high discharges in May and June, when snowmelt phenomena largely occur, and by significant flood events in summer and autumn months. The available bedload transport data, recorded during a few flood events, are analysed in relation to water discharges (runoff volume, entrainment and depositional critical discharges).