• 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...

Introduction

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.

Middle

(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.

Conclusion

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. How does Loughton Brook change as it moves downstream?

    This is what I have proved in this investigation by gathering the information and put it into comparable and easily accessible data EVALUATION Strengths Weaknesses Wider Applications The most interesting aspect of my study was collecting the data as I thoroughly enjoyed fieldwork.

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

    In which it has with Halton Gill (upstream) having a greater angularity than Arncliffe (downstream). It is now possible to say that the hypothesis, 'Bedload will decrease in size and angularity downstream.' Is true. This is taken from all the evidence that has been presented in the previous section and the final analysis that has been carried out above.

  1. Investigating the river Caerfanell

    This widens and deepens the river as there is less friction around the wetted perimeter, and as a result it increases velocity downstream. The only anomalies of the graph are found at site 1 interval 3, and site 2, interval 4 of where the velocity readings are higher than expected.

  2. Geograpgy glendun river

    Floodplain - A flat, low-lying area near a river or stream which is subject to flooding. Gradient- the steepness of the river Interlocking spurs - spurs of high land which over lap in the upper part of the valley

  1. This project will study about the way the river Conwy in north Wales changes ...

    > WIDHT: To study how the river is wide (width). This is measured in metres. > DEPTH: To study how deep is a river, this is measure in metres. > VELOCITY: To study, how fast the river flowing. This is measured in cubic meters per second.

  2. Do the Characteristics of a river change downstream?

    Evidence of human activity can be sent throughout the photo above in the form of constructed footpaths or routes that have been overused by humans causing them to be worn down (shown by brown or ashen lines on the map.)

  1. The aims of our study were to measure and analyse the changing characteristics of ...

    7. How many recordings/samplings will you take? We will collect 5 recordings for gradient and velocity, for discharge we will take 10 measurements, and for load size and angularity we will take 50 samples. 8. Which river will you choose and why? I will choose the Ballymully River as it is situated relatively close to my school.

  2. "The Hydrological Study Of the River Conwy"

    It consists of consecutive meanders. The meander we studied and observed had a slip off slope that consisted mostly of slate rocks and quartz. This meander had a wide, flat valley that shows us that there is no vertical erosion and only lateral erosion evident.

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