• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

As the water flow progresses downstream, the river channel should become wider and deeper due to lateral and vertical erosion

Extracts from this document...


Hypotheses I am testing that this is how the following hypotheses will change as you progress downstream: * The river will get wider and deeper * The velocity will increase * The discharge will increase * The gradient will decrease I will also test the following hypothesis: * Sediment size will decrease Predictions As the water flow progresses downstream, the river channel should become wider and deeper due to lateral and vertical erosion. ...read more.


The rivers discharge will also increase because of the rivers tributaries contributing to the water flow of the main river. These tributaries help collect water from inside the river basin and carry it to the main river where it joins at a confluence. The gradient of the river will decrease as the water flows further down the river. This is because the gradient is very steep in the Upper Course as the Source is always the highest point. ...read more.


This is due to rocks of large masses also being large in size. The significance of the mass of the sediment is that it can only be transported downstream if the velocity is large enough to carry it. For example, only a high velocity could carry heavy pieces of sediment. This means that large pieces will be found near to the Source and small ones close to the Mouth. I have made these predictions from theoretical background into the usual features of a river as so to make accurate predictions. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Hydrology & Fluvial Geomorphology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Hydrology & Fluvial Geomorphology essays

  1. Study the downstream changes of Loughton Brook.

    The river has more energy due to the large amount of water and so erodes the river. During the later stages of a river there is more horizontal or lateral erosion rather than vertical erosion. Corrasion will also occur and will widen the channel.

  2. How does Loughton Brook change as it moves downstream?

    each site and for each pebble we recorded its length, roundness and sphericity. To measure its length we used a 30 cm ruler. We took ten samples so that we could work out an average. This will help we see the difference between sites at different Stream order.

  1. An investigation into changes in channel parameters down the river Horner

    This scatter graph shows a strong correlation. It shows that as the river becomes more efficient it gets faster. This proves that it is certainly a factor influencing the velocity. So I think that the velocity increases due to an increasing CSA and hydraulic radius. The graph shows that as the river goes downstream the pebble shape becomes more rounded.

  2. How Do River Characteristics Vary Downstream?

    Also, the size of the river channel will not increase due to the lack of erosion taking place (as there is not a large quantity of water), as a larger river channel (providing it is full) means a larger cross sectional area.

  1. Geography investigation - The River Skirfare located in the Littondale region in the Yorkshire ...

    Though the wetted perimeter and cross-sectional area are not much use in determining the direct efficiency of a point along a river, the hydraulic radius provides an overwhelming amount of support in this particular hypothesis. This will be of great use in the following section.

  2. The river Gwaun: Investigating how the course of the river changes from the source ...

    Once we had covered the whole stretch of the river, we made an average. Results Depth (Every 25cm) Site 1 Site 2 Site 3 Site 4 25 2 20 15 32 50 5 31 27 35 75 8 32 30 43 100 12 40 34 125 125 35 41 40

  1. Investigating the river Caerfanell

    This method was completed last of all because if I changed the river physically by unconsciously moving the rocks before I had completed the other tasks it would have disturbed the natural flow of water thus affecting the other methods results such as velocity readings and also would have

  2. Fluid Dynamics - Free surface profiles in an open channel.

    The fluid gains a higher velocity V2, and a shallower surface height Y2 downstream. * Once the flume had steady running water in the channel, it was adjusted such that the inflow rate Q was a low rate, and the upstream water depth was above the top stagnation tube on the gate.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work