Indian Journal of Soil Conservation

Concentrated overland flow and percolation are important aspects in the hydraulic process, which affect the soil and nutrient losses through runoff and deep percolation. A tilting flume was installed at CSWCRTI, RC, Bellary (Karnataka) for study of soil erosion, deep drainage and related hydraulic processes. The hydraulic flume can be tilted by adjusting four screw jacks in the range of 0 - 5%. There are equally spaced perforations in flume bed for collecting the deep drainage, and that of runoff and soil loss through equipped measuring units. A water recirculating system with adjustable gate at inlet and outlet was also provided to regulate the discharge in the flume. This tilting flume can be used to study the process of runoff, infiltration, soil loss and nutrient losses under varying discharge, slopes, soil depths, soil types and land management practices. Laboratory studies on runoff, soil loss and percolation with and without a barrier were conducted in vertisol (black soil)