• 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...


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.


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.


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. Hydrology and Fluvial geomorphology. (Q&A)

    In a highland area, the channel tends to be rough in shape with rock protrusions. The load is angular and often consists of larger boulders and rocks. These all mean there is an increased wetted perimeter (the surface of the banks and the bed that the river is in contact with).

  2. Explain how human activity can modify the hydrological cycle.

    It also takes the water from the water cycle. The water may then enter a human drain as it is sued which will move it quickly to a river or a lake. There is therefore less water being stored in the water table and the water is then moved to

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

    We did this to find out if the velocity was higher in the modified channel than the natural channel. If the velocity was higher in the modified channel then it means it can take away the water from the local homes quickly.

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

    In order to improve the results I would repeat the experiment at different times of the year. A good time to do this would be during the winter, when the beach would have probably have been affected by winter storms.

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

    This will gather evidence for the first key question. � The technique used to collect the pebbles was used because it gave an average idea of the major similarities between the 10 samples and the differences between the other samples collected from other sites. This will gather evidence for the Second key question.

  2. Do the Characteristics of a river change downstream?

    If we had instead decided to use inches and feet, because it would have been confusing for the students as we are not all familiar with the measurements but more importantly the metre sticks we were specified did not encompass the units of inches and feet therefore creating extra costs.

  1. Hard & Soft Engineering

    Levees. Used to hold and contain water, so that the floodplains can, be developed. (A side view of a levee - Picture obtained from http://www.publicaffairs.water.ca.gov/newsreleases/2006/03-22-06levee.jpg) Weirs. These are built to slow the velocity of water down in order to stop erosion of the river banks.

  2. 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)

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