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

Explain How and Why the Ouse floods and its consequences.

Extracts from this document...

Introduction

Explain How and Why the Ouse floods and its consequences. Over the years human influences have affected the Ouse. The river Ouse is the principle drainage basin in Yorkshire and is naturally very large, covering 10,770 square km. It has four main tributaries; they are the Wharfe, Derwent, Aire and Don, these all contribute to the Ouse having a large base flow. The relief of the Ouse section of the basin is almost uniformly flat. The annual precipitation varies very little as a result, ranging from between 540 and 640 mm. ...read more.

Middle

The upland areas like the Pennines and Yorkshire Moors are dominated by pastoral activities, while the Vale of York has a mixture of arable and dairy farming. There are large areas of moorland in the uplands, particularly to the West of the Ouse. Moor land 'Gripping' (grips are drains) was carried out extensively in the Swale, Ure and Ouse catchments in the 60's and 70's, the consequence of these works has been to lower the water table and increase stream base flows near the drained areas. ...read more.

Conclusion

New housing areas, out of town shopping centres, and infrastructural developments all create impermeable surfaces within the basin. This then leads to an increase in surface run-off as infiltration is reduced. Drains carry much of this water into local streams and rivers, which increases discharge and can contribute to a greater frequency and magnitude of flooding There have been numerous floods in the past in York and other parts of the basin. Recent floods include those on the Ure affecting the area around Boroughbridge in 1991, and major floods around Selby in 1995 and along the Derwent in 1999. ...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. Do the Characteristics of a river change downstream?

    ground with one end at the start of the bank and the other going up the valley side. We then placed the clinometre on top of the metre ruler and measured the angle of the slope. The process quite similar to using the abney level involved lining the bubble up

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

    able to fit into the channel to be taken away from the natural channel to avoid flooding. Graph 5 Graph 5 shows the distance from both the right and left banks to water in both the natural channel. The graph shows a large difference in the difference of four metres

  1. Geography Coursework: Epping Forest

    river valley with a leafy covering on the ground of the river valley sides. The valley did not have a steep gradient because of the clay soil, which slips down the bank of the river. The trees on the river valley helped to hold the soil together.

  2. Geography Coursework How Does Farming Change Between Bredon Hill and Birlingham? ...

    Good/very good Berwick brook Infiltration rate 35 secs 18 secs 9 mins Relief/Gradient/Aspect Steep Slight slope towards river. No aspect Geology Upper Lias Middle Lias Alluvium Lower Lias Environmental issues Badgers Head Lands Flood risk Conservation Tree planting Organic Willow trees to help hold river bank together.

  1. Consequences and Responses of Floods in the L.E.D.W and the M.E.D.W

    * Impacts on economy because of destruction of property, firstly economical loss then insured loss, M.E.D.C's will suffer the most from economical loss because they have property of greater value per area than L.E.D.C's, but M.E.D.C's will be insured. L.E.D.C's will have little to no insured loss and less economical loss because they can't afford it in the first place.

  2. The use and abuse of Snowdonia, a glaciated upland region.

    The river which is left over after ice has melted, now looks far too small for its deep, wide valley and that is why it is called a misfit river. There is also moraine on the sides of the valley, this is called lateral moraine as it is carried at the sides of the glacier.

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

    This is just one example of the links that will be found. To understand this investigation in thorough detail it is important to understand both the erosional and transportation processes that occur within a river. These can be seen in diagrams on the next page.

  2. Devestating floods hit Bangledesh!

    The people of Bangladesh generally blame the Nepalese farmers and the Indian and Bhurmese governments for these `freak floods' which do not usually occur. I asked Sarah Nayeem, A Bengali Accountant who lives in Dhaka, Who she thinks is too blame for the floods?

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