![]() ![]() Normally a very coarse load is carried by streams flowing over mountain slopes.Alluvial fans are formed when streams flowing from higher levels break into foot slope plains of low gradient.Depositional Landforms by Running Water.When the terraces are seen only on one side with none on the other or one at quite a different elevation on the other side, they are called unpaired terraces.The river terraces may occur at the same elevation on either side of the rivers in which case they are called paired terraces.They are basically products of erosion as they result due to vertical erosion by the stream into its own depositional floodplain.River terraces are surfaces marking old valley floor or floodplain levels.It is common to find meandering courses over floodplains and delta plains where stream gradients are very gentle.Because of active lateral erosion, streams flowing over gentle slopes develop sinuous or meandering courses.Entrenched meander normally occurs where there is a rapid cutting of the river bed such that the river does not erode the lateral sides.Incised or Entrenched Meanders are very deep and wide meanders that can be found cut in hard rocks. ![]() These pools also help in the deepening of valleys.Plunge pools are large potholes, quite deep and wide, formed because of the sheer impact of water and rotation of boulders.Once a small and shallow depression forms, pebbles and boulders get collected in those depressions and get rotated by flowing water and consequently the depressions grow in dimensions.Potholes are more or less circular depressions formed because of stream erosion aided by the abrasion of rock fragments.Canyons commonly form in horizontal bedded sediment.In fact, a canyon is a variant of a gorge. A canyon is wider at its top than at its bottom.A canyon is characterised by steep step-like side slopes and may be as deep as a gorge.A gorge is almost equal in width at its top as well as its bottom.A gorge is a deep valley with very steep to straight sides.Valleys start as small and narrow rills and the rills will gradually develop into long and wide gullies the gullies will further deepen, widen and lengthen to give rise to valleys.Most of the erosional landforms made by running water are associated with vigorous and youthful rivers flowing over steep gradients.In humid regions, which receive heavy rainfall, running water is considered the most important of the geomorphic agents in bringing about the degradation of the land surface.What are the Landforms Made by Running Water? Every landform has a beginning and landforms once formed may change in their shape, size and nature slowly or fast due to continued action of geomorphic processes and agents.Actions of most of the geomorphic processes and agents are slow, and hence the results take a long time to take shape.Each landform has its own physical shape, size, materials and is a result of the action of certain geomorphic processes and agent(s).A landform is a feature on the Earth's surface that is part of the terrain. ![]()
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