Brixenbach research catchment: Quantification of runoff process proportions in a small Alpine catchment depending on soil moisture states and precipitation characteristics

The Brixenbach valley is a small Alpine torrent catchment (9.2 km2, 820–1950 m a.s.l., 47.45°, 12.26°) in Tyrol, Austria. Intensive hydrological research the since more than 12 years, including hydrogeological survey, pedological and land use mapping, measurements of precipitation, runoff, soil moisture infiltration as well conduction rainfall simulations, has contributed to understand response catchment, its subcatchments specific sites. paper presents synthesis form runoff process maps for different states precipitation characteristics, derived with aid newly developed Soil-hydrological model. These clearly visualize differing reaction subcatchments. pasture dominated areas produce high surface flow rates during short events (1 h, 86 mm) intensity, whilst forested often develop shallow subsurface flow. Dry preconditions lead slight reduction flow, long (24 170 dominance deep percolation.