Ragleth Class Geography case study Today, Ragleth Class have been identifying and labelling the features of the River Severn. We studied the course of the river and plotted key landmarks and locations onto the map. We found that in the upper course the land is of a steep gradient and in the lower course, the land is much flatter. The river transforms from a small stream (in the Plynlimon Hills) into a 13km wide channel in the Bristol Channel. Tomorrow we are going to use OS maps to study the gradient of the land in more detail. By Mr C Pearce Year 6 Cohort Leader View all of Mr C Pearce's posts.