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

How may knowledge of the hydrological cycle and its components assist in devising flood prevention measures?

Extracts from this document...

Introduction

How may knowledge of the hydrological cycle and its components assist in devising flood prevention measures? The hydrological cycle is responsible for the circulation of water around the Earth, between the different systems in the planet. The knowledge of the entire cycle and its components, including precipitation, the different flows and stores involved in the cycle, one is able to gain insights into the movement of water and thus devise means to prevent floods. The key aspect of the hydrological cycle is that of the water input on land, which is precipitation. Understanding the seasonal variations in the inputs would allow us to gain insights into the seasonality of flooding and possibly even the frequency of flooding in a given area. As such, water at dams can be released at appropriate times so that the lakes can subsequently be used to hold back floodwaters when the high intense precipitation sets in. ...read more.

Middle

Both of these activities would result in shortened lag time within the drainage basin. Thus, understanding these features in the hydrologic cycle would allow us to reverse these developments and take actions to prevent flooding that may result because of increased surface run-off due to lack of exposed land area to capture water in the groundwater stores. Afforestation projects may be undertaken to raise interception storage in barren areas so that precipitation is intercepted and do not reach the channels that quickly. Large urban areas can be planned with more parkland so that there are spaces between covered ground that can accommodate the precipitation and would allow percolation so that groundwater stores are utilized efficiently. This would also provide the opportunities for groundwater recharge. Urban drainage systems can also be designed to allow water to seep into the ground rather than to deliver water efficiently to a central channel. ...read more.

Conclusion

While this essay has broken down the hydrological cycle into parts where knowledge of certain components of the cycle can be used to devise flood prevention measures, in reality, the entire hydrological cycle must be taken into consideration as the relations between the precipitation, flows and stores are complex and these variables and interdependent. The precipitation would influence the flows and this in turn can change the natural capacity of the rivers. At the same time, the knowledge of infiltration capacity of the area inferred from local geology needs to be combined with knowledge of precipitation patterns to assess the flows in the area and thus work out the necessary measures to prevent flooding. 1 Effect of this method unknown because I made it up 1 Effect of this method unknown because I made it up 2 Not directly addressing the question of flood prevention (this is a mitigation measure) ...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. Explain how human activity can modify the hydrological cycle.

    Humans may intentionally affect precipitation levels using cloud dusting. This is when planes are used to spray a chemical into the atmosphere. The chemical gives a surface for the separate water particles to attach to, and so they form a raindrop.

  2. Do the Characteristics of a river change downstream?

    When one of these 'areas' was discovered we stayed clear of it for the duration of the collection for the stones. Method 4 - The velocity of the river for the River Wharfe and Backstone Beck. River Wharfe Apparatus * Thirty metre tape measure * A bag of oranges (Ten or more?)

  1. To what extent the flood alleviation scheme has had on the environment and people ...

    The results show that the beach is larger on the South side of the beach. On the North side of the beach there was only 9.50m of beach we could measure, whereas on the south side there was nearly 24m beach we were able to measure.

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

    This means the water level has to rise by a larger amount for the river to flood the river. A Dam is a piece of infustructure used to hold back by river water and release it in a controlled way.

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

    We recorded the results on our recording sheet. We chose to calculate the depth, as it is a key feature of rivers efficiency. If the depth increases as we make our way downstream that means that the river is carrying more water so this again will prove that the river becomes more efficient as it moves downstream.

  2. Hard & Soft Engineering

    This is where a meandering river has a new straighter channel cut, to provide a shorter and alternative route, often this new channel is concrete lined to aid flow and reduce flooding. Realignment also steepens the gradient of the river and aids navigation for boats and water-borne craft. Levees.

  1. History Course Work Essay

    When it was discovered there was a hamlet, and an old corn mill which was out of business. This mill gave proof to Greg that the river there was capable of supplying water to a mill. The River Bollin, which ran next to Styal (source 4)

  2. In this assignment I'm going to explain how flooding on the river Lea is ...

    This was due to the quality of soil, good water supply, and easy access to the markets of London and the availability of seasonal labour from the capital. The extraction of good quality gravel, deposited in the valley during the ice age, also became a major activity, particularly Ware although

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