Top view of the sediment and dead trees carried by the river after heavy rainfall

top view drone sediment sedimentation dead trees the river heavy rainfall aerial view overflowing banks river banks heavy weather rainfall sand mud climate change dike breach storm damage aerial footage severe weather global warming erosion control course water flow hydrology geomorphology silt sediment redistribution flow erosion geology water channel basin watercourse landform watershed flood landforms groundwater deposition riverbed stream slope hydrogeology sediments drainage