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Thinking Allowed: Factory music and volunteering post-recessionMonday, 6th July 2015 00:15 - BBC Radio 4<p>On this week's programme, Laurie Taylor and guests discuss pop music in worker's culture and how... Read more: Thinking Allowed: Factory music and volunteering post-recession
The Met: Policing London: Episode FiveMonday, 6th July 2015 21:00 - BBC One
Catching History's Criminals: The Forensics Story: Instruments Of MurderMonday, 6th July 2015 22:00 - BBC Four
The Met: Policing London: Episode FiveMonday, 6th July 2015 22:35 - BBC One
Catching History's Criminals: The Forensics Story: Instruments Of MurderAvailable until Wednesday, 5th August 2015 23:00The key piece of evidence that detectives are desperate to find is the murder weapon. Read more: Catching History's Criminals: The Forensics Story: Instruments Of Murder
Thinking Allowed: Factory music and volunteering post-recessionAvailable for over a year
The Bottom Line: Summer 2015: The Bottom Line - Burger BattlesAvailable for over a year
The Met: Policing London: Episode OneAvailable until Friday, 10th July 2015 02:50
LifeDavid Attenborough explores the vibrant mix of life found on our plant - where it comes from, and... Read more: Life
Take the photographic memory testCan you capture scenes just by looking at them? Find out with our photographic memory test. Launch now: Take the photographic memory test
Start writing fictionHave you always wanted to write, but never quite had the courage to start? This free course,... Try: Start writing fiction now
Fuel poverty in ScotlandIn this unit, you will be hearing and reading about the issues faced by people living in poverty... Try: Fuel poverty in Scotland now
Water is arguably the most important physical resource as it is the one that is...
Water is arguably the most important physical resource as it is the one that is essential to human survival. Understanding the global water cycle and how we use water is essential to planning a sustainable source of water for the future. In the UK there area areas where water supplies are limited, shown by recent droughts. Globally, there are many areas that do not have enought water to support the currently population adequately. Decisions will have to be made on the best way to use water in a world where there is climate change.
By the end of this unit you should be able to:
- list the types of springs, and how each type relates to a different geological setting;
- use hydrographs to distinguish overland flow and interflow from baseflow, and make inferences about the climate of an area;
- expain how various changes in land use in a river catchment will change the hydrograph of a river;
- distinguish the different types of reservoir construction, and decide whether a particular area would be suitable for a reservoir, suggest the most suitable type of dam for a site, and summarize the side-effects of constructing reservoirs.
- Current section: Introduction
- Learning outcomes
- 1 Springs
- 2 River flow
- 3 Reservoirs
- 4 Summary
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We have seen that where precipitation reaches the ground, some runs off the surface into streams and rivers and some of it infiltrates, passing through the soil. Water that reaches the water table to become groundwater may eventually re-emerge at the surface as springs where the water table intersects the surface. Almost all streams and rivers have springs or seepages as their ultimate source, or are fed by them at various points along their courses.
This unit is from our archive and is an adapted extract from Earth's physical resources: origin, use and environmental impact (S278) which is no longer taught by The Open University. If you want to study formally with us, you may wish to explore other courses we offer in.
This is an extract from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Environmental Science courses or view the range of currently available OU Environmental Science courses.
Copyright & revisions
Originally published: Monday, 11th July 2011
- Creative-Commons: The Open University is proud to release this free course under a Creative Commons licence. However, any third-party materials featured within it are used with permission and are not ours to give away. These materials are not subject to the Creative Commons licence. See terms and conditions. Full details can be found in the Acknowledgements section.
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