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

River course project.

Extracts from this document...


Map of Area List of Apparatus * Chain * Clinometer * Net * Bucket * Tape Measure * Measuring Poles * Flow Metre * Ruler (1 metre) * Dog Biscuits * Stop Watch Aims * To measure the length of the wetted perimeter * To measure of the river * To measure the depth of the river at five different intervals * To study the velocity of the river at five different intervals * To measure the gradient of the river * To study the level of pollution in the river Methods Used Wetted Perimeter Measuring the length of the river 4 sites along Afon Conwy 10m sections. A chain (red) and a tape measure were used to work out the wetted perimeter. The chain from the water surface on one bank was taken to the opposite bank and the length of the chain was measured. Measuring the Wetted Perimeter (above) Width Measuring the Width (below) A tape was used to measure the water surface on one bank to the water surface on the other bank. ...read more.


(Hypothesis 6) Hypothesis 1. The width of the river will increase downstream 2. The steeper the gradient the faster the velocity 3. The depth of the river will increase downstream 4. The stone size will decrease downstream 5. The stone roundness will increase downstream 6. Due to more pollution downstream there will be less variety of invertebrate life Results All the above 6 graphs are linked to stone roundness. The very angular and angular graphs show a steady decrease in these stones until site 5, and 6. Sub angular stones show a steady increase until site 4 and 5 where there is a massive decrease. Sub rounded stones show a large increase in site 3. Rounded stones show a steady increase up and till site 6 where there is a large decrease in the stones. Well rounded stones show an increase in site 4 and 5. This data does not show a regular pattern, this could be for a variety of reasons such as the river narrowing, slowing the velocity so that Abrasion is less affective. (Hypothesis 5) ...read more.


Site 4 and site 5 have a greater amount of rounded stones than site 6, which has more angular and sub angular stones which I didn't expect since it was our last site on the river Conwy, site 6 has a high gradient and fast velocity, and was over 37 metres wide. The anomalous results for site 5, 6 lead me to the conclusion that because these sites were secondary data given to us by the field centre and collected by another school, the data may of not been collected properly, it could have been a different time of year therefore altering everything such as velocity, the amount of pollution in the river, the variety of invertebrate life etc. I must express the limitations of the evidence I collected, we only took primary data from 4 sites along the river Conwy, which for a +27km river is not a lot of sites therefore the anomalous results could have been because of certain sites, in a small stretch of river, I would of needed more time, research, and further sites along the Conwy river to get more accurate and meaningful results. ...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. This project will study about the way the river Conwy in north Wales changes ...

    STONE: We have to pick 30 stones because there are 6 types of stones. By the use of scale we can find the measurement of the stone. We just pick measurement of the stone. We just pick up the stones without viewing because not to go for very smaller stones.

  2. Does the river Alyn follow Bradshaw's model?

    metres 11 10 10 / 11 = 0.91 360 metres 12 10 10 / 12 = 0.83 390 metres 11.3 10 10 / 11.3 = 0.88 420 metres 42 10 10 / 42 = 0.24 450 metres 10.3 10 10 / 10.3 = 0.97 To find the discharge I used the formula Discharge = Cross-sectional Area x Velocity.

  1. My hypotheses are:The character of the course of the River Bollin will change along ...

    The water was very shallow, fast moving, and the rocks found on the riverbed were large, angular stones, with jagged edges.

  2. To assess whether the modified channel of the river ash is effective in reducing ...

    It even has a smaller wetted perimeter and a grate to reduce debris in the channel. We might not have got the results we expected because we only did this experiment in one section of the river. If we had also completed the experiment in other places in the channel

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

    To measure the gradient we used an 'automatic level5. We did this by using a metal ruler, which had to be held by a member of my group while the other members of the group set up the automatic level so it gave us a reading of the gradient.

  2. Do the Characteristics of a river change downstream?

    The river mainly erodes in a downwards direction (vertical erosion) to try to reach its base level. This helps to create V-shaped valleys in upland areas. The different types of bedload in the stream would most likely be large and angular owing to it being the upper course and not having time to erode the material.

  1. Geograpgy glendun river

    the upper course so it would take more energy to carry, as you go further down stream the load gets smaller and eventually there will be pebbles, this creates a high load amount as there are only pebbles and not boulders.

  2. I will be analysing six different sites in the River Wye, at the western ...

    Turbulence: it decreases in the way that the bedload in the water erodes which then makes the channel smoother, so the water runs over the smooth surface and is never deflected. This means that upstream water bounces and deflects of the big rocks so that it traps air and becomes more turbulent.

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