A river long profile shows the shape of the river's course from source to sea. It shows the changing width, depth and gradient of the channel downstream.
MAIN FEATURES OF LONG PROFILE:
UPPER COURSE : waterfalls, potholes, V-shapped valleys,plurge pool,boulders
MIDDLE COURSE : meanders, slip-off slopes, river cliffs
LOWER COURSE : levees, ox-bow lakes, delta,braided channel