Erosion signs features within gully-ravine catchment

Purpose: to determine patterns of formation hydrographic network elements depending on the melt-and rainwater runoff and soil losses. Materials methods. The studies were carried out in upper reaches Bolshoy Log gully system, which is a part land use experimental farm “Polevoy” Federal Rostov Agrarian Research Center, with an area 2070 hectares, more than 70 % arable land. Soils are ordinary chernozems varying degrees erosion. standard methods research method pins used plots. Results. Within catchment area, amount hydraulic indicators water courses greatly influenced by agricultural background surface condition from meltwater flows, intensity erosion processes depth freezing, moisture content topsoil, storage snow, snowmelt intensity. sprays concentrated along gullies, where washed over time, they pass into category hollows, then ravines forming gully-ravine area. most intensive was observed years: 1988 – 33.8 mm, 2003 63.9 2006 24.6 2014 14.3 2017 19.3 2023 10–14 mm. In variants reclamation protective forest plantations structures, 5–12 mm less control it retained belt. mathematical data analysis made possible relationship between rate loss catchment, distance watershed. Conclusions. On sheet wash smoothly turns linear one forms hollows valleys. final link gullies. During peak periods meltwaters, flow velocity flat sections slope 0.33–0.46 m/s, 0.57–0.83 m/s.