• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10
  11. 11
    11
  12. 12
    12
  13. 13
    13
  14. 14
    14
  15. 15
    15
  16. 16
    16
  17. 17
    17
  18. 18
    18
  19. 19
    19
  20. 20
    20
  21. 21
    21
  22. 22
    22
  23. 23
    23
  24. 24
    24
  25. 25
    25
  26. 26
    26
  27. 27
    27
  28. 28
    28
  29. 29
    29
  30. 30
    30
  31. 31
    31
  32. 32
    32

This project will study about the way the river Conwy in north Wales changes as it flows down stream. It involves on different variables such as width, depth, velocity, and wetted perimeter, discharge etc.

Extracts from this document...

Introduction

Introduction This project will study about the way the river Conwy in north Wales changes as it flows down stream. It involves on different variables such as width, depth, velocity, and wetted perimeter, discharge etc. It flows about 60 km from LIyn Conwy to estuary at Conwy. River Conwy was formed in the ice age. Background information MIGNEINT MOOR: a) The geology is metamorphic rock b) Soil is peat c) Precipitation high d) Height 300 m plus e) Vegetation were cotton grass, rough grasses YSBYTY IFAN: a) Small upland b) Mostly welsh speakers c) Occupation is wool weaving d) Famous for sheep farming e) Embankment built 10 years ago f) Bridges causes the river to increase in velocity g) Deposition on the upstream h) Shallows and flood risks Land use mainly pastures for cattle and sheep. This follows river, road and rail. Llanrwst is main town of the valley. Tourism is important economic activity. Conwy has an important castle built in the c14 by Edward 1 RIVER THEORY We can found all these things in a river. Upper course: a) V shaped valley b) Pools and riffles c) Pot holes d) Turbulent water e) Braided channels f) Rapid flow of the water g) Very steep In this course erosion takes place Middle course: a) Waterfall rapid b) Gorges c) Wider v shaped d) Interlocking spurs e) A little bit curve in the river f) Less gradient g) Less steeper In this course erosion and transportation takes place. Lower course: a) Flood plain b) Meanders c) Bluffs d) Ox bow lake e) Terraces f) Leeves g) Delta h) Flat In this course transportation and deposition take place. Erosion is of different kinds: a) Abrasion: materials carried by the river wear away the river channel. b) Attrition: the materials smash into each other and making them rounder. c) Hydraulic power: sheer force of the flowing waters on the bed and the bank. ...read more.

Middle

We have to pick stones from different place because when we pick up a stone from a same place and stones will be similar. VELOCITY: We are using cork because if we use some heavily substance water didn't have energy to carry the heavy substance. We have to repeat it for 5 times and also we have to throw the cork in different place because we have to notice the speed in different place. we are repeating it for 5 times this is to make an average. FLOW METRE VELOCITY: We have to measure the flow metre in five different places, because to make it as an average and also make the measurement flow metre in different places. We have to do this for one minute because it is comfortable time. LIMITATIONS WIDHT: 1) Poles cannot stamp at the correct place because there are rocks in the side of the river. 2) The problem with the width, the tapes were carried out by the river. So difficult to measure the correct width. 3) The poles were falling down because of the heavy wind up the mountains. DEPTH: 1) It is difficult to measure the depth in the flowing water. 2) I cannot put the scale on the slippery rock. 3) Human error measuring the depth wrongly. VELOCITY: 1) Sometimes the cork dash against the rock and take time to reach 10 metres. 2) In some place the side of the channel have interlocking spurs, when the cork was thrown it dashes in the interlocking spurs and it will take time. WETTED PERIMETRE: 1) It is hard to make a correct measurement because there are some undercuts. 2) Human error will be made easily, by making a chain measurement on the tape. FLOWMETRE VELOCITY: 1) The flow metre sometimes does not work because the bushes will slow the fall of water. 2) If we make the flow metre more than 1/3 up it will not give a correct result. ...read more.

Conclusion

CONCLUSION The width is increasing when the river travels down stream (true) This is because it increases the amount of water joining in from the tributaries and ground water. The depth is increasing when the river travels down stream (true) This is because the water speeds up the channel to get through and when it travels downstream there will be a less gradient and steep so it will be gradually increases the depth. The cross sectional area is increasing when the river travels down stream (true) This is because the depth and width gets bigger and bigger when it travels downstream. The wetted perimeter is increasing when the river travels down stream (true) This is because the channel was increasing. The float velocity is increasing when the river travels down stream (false). I thought the river is coming from the mountain so there will be steeper and it will more faster than site 3 but unfortunately its false because the site 3 has low friction so there will be more speed than site 1. Flow metre velocity is decreasing when the river travels down stream (true) In the upper stream there will more friction but in the lower stream there is less friction because of attriction. Gradient is decreasing when the river travels down stream (true) This is because the river is coming up from the mountain so there will be change in steep Stone size is decreasing when the river travels down stream (false) This is because of poor sampling. How the stone size will be increasing? It will be eroded. Discharge is increasing when the river travels down stream (true) This is because the water level will be high and depth increases when the river travels downstream. Hydraulic radius is increasing when the river travels down stream (true) This is because it has relationship between wetted perimeter and cross sectional area measures of efficiency as smaller, normal the more friction takes place the less efficiency stream. ACKNOWLEDGEMENT I would like to thanks MR WHITTLE,MR STEVE AND MISS PARKINSON TO HELP ME IN THIS PROJECT. ...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 A River Changes As It goes Downstream.

    The velocity of the water is much quicker because there is less friction. Most of the erosion has been done. But it still occurs. The flow of current is travelling so much faster than the above to stages. Here is where most of the features are formed.

  2. Study the downstream changes of Loughton Brook.

    It occurs when limestone and chalk dissolve in water. Transportation in the River channel Transportation is the movement of eroded material. Another word for eroded material is sediment. There are four types of transportation; 1. Suspension: is when fine silt and clay material is mixed and carried in the water itself.

  1. I am going to study the characteristics of rivers and how they change as ...

    have used this method by ordering all streams on the River Roding Basin including the Loughton brook. I am going to compare three sites on a 2nd, 3rd and 4th order stream. The channel depth and width will increase as stream order increases because the speed of the river increases.

  2. Case Study on The Three Gorges Dam in China

    The map on the following page indicates this loss of land to the reservoir. Tourism River cruises on the Yangtze have become ever more popular through the scenic area of the Three Gorges as the Chinese tourism industry has grown in recent years.

  1. Microclimates: Detailed Study.

    The junior school playground will be the least windy and the sunniest site through out the whole day. My hypothesis is the junior school playground is a large open area with no rooftop-shelter which means that the sun rays can easily reach it without being stopped or reduced by anything.

  2. How does the Efficiency and Cross-Sectional Area of a River Change Down Stream?

    or take more time measurements 10/10/07 Friction Survey Internal and external estimations of friction scored from 1 to 5 To show the shape and size of the river down stream Using table (see fig. 3), estimations were made as to how much friction there was by the river Inaccurate recordings.

  1. Edexcel Geography B Unit 3 Coursework

    7 7 0 0 0.21 0.19 8 8 0 0 ?d� = 1.5 Substitute into equation P = 1 - (6 x 1.5)/8(64-1) P = 0.98 From this value I can already see the high level of correlation between average depth and hydraulic radius as it's incredibly close to 1 (being perfect correlation).

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

    and rounded (5). We then made averages of the lengths of bed load at each site. Results Site 1 Site 2 Bed Load Sample Bed Load Shape Bed Load Sample Bed Load Shape 1 5 1 3 2 4 2 4 3 4 3 2 4 3 4 3 5

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