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Water on the land

Information GCSE Case study Revision AQA_A. Cockermouth, Cumbria. Water on the land.

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Water on the land

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  1. Information GCSE Case study Revision AQA_A Cockermouth, Cumbria Water on the land Cumbria Floods 19th Nov 2009 (M.E.D.C. case study) TASK – make notes on causes of 2009 flood during the slideshow & website (incl videos). http://news.bbc.co.uk/1/hi/8376031.stm

  2. Information GCSE Case study Revision AQA_A Met Office forecast that 350 mm of rain was possible in the most exposed locations over high ground. The prolonged downpour was caused by a long-lasting flow of warm and very moist air which had originated over sub-tropical waters of the Atlantic. http://news.bbc.co.uk/1/hi/8376031.stm Sea temperatures in Atlantic were some 2°C above the November average, enhancing the evaporation of moisture. The strong winds also refreshed the supply of moist air so that the system was not able to "rain itself out". So, the stronger the flow; the more efficient the rain-making. Just like any hilly west facing coast, moist air has to rise over the mountains, cools as it rises, and is forced to drop much of its moisture as it cools. So, the Lake District is a naturally very wet part of the country, and the hamlet of Seathwaite in Borrowdale is, on average, the wettest inhabited place in England with a mean annual rainfall (1971-2000) of 3,400mm In the 24 hours from midnight to midnight on 19 November, Seathwaite in Borrowdale, Cumbria recorded 316 mm of rainfall Water on the land Cumbria Floods 19th Nov 2009 (M.E.D.C. case study) Causes Heavy rain and gales affected many parts of north-west Britain from 18 to 20 November 2009. The worst-hit area was the Lake District which experienced prolonged heavy rainfall from the evening of Wednesday 18 November through to the early morning on Friday 20 November. The associated high river flows and flooding problems were made worse by already saturated ground. Cumbria had already received close to the whole-month November average rainfall before the heavy rain and gales. The most serious impacts of the flooding were in Cumbria with over 1,300 homes affected, with many more left without power and water. There was severe travel disruption on both roads and railways. Several bridges collapsed and others were closed. Tragically, a police officer died after a bridge collapsed in Workington. Town centre of Cockermouth Results Impact Footbridge collapsed at Workington www.metoffice.gov.uk/about-us/who/how/case-studies

  3. Information GCSE Case study Revision AQA_A Table 1: Properties flooded by district and use. CUMBRIA Allerdale Barrow Carlisle Copeland Eden South Lakes Residential 1,794 1,299 0 15 22 74 384 Commercial 445 422 0 0 0 5 18 www.cumbriaobservatory.org.uk/elibrary/Content/Internet/536/671/4674/4026717419.pdf Water on the land Cumbria Floods 19th Nov 2009 (M.E.D.C. case study) Of the 1,721 properties flooded in the Allerdale borough - 917 were in Cockermouth (pictured). Of these 691 were residential properties. http://news.bbc.co.uk/1/hi/england/cumbria/8398538.stm The Cumbrian town of WORKINGTON was divided when floods destroyed its river crossings, killing a police officer, it has been re-united by a temporary footbridge. Workington's Barker Crossing, built by the Army, is named after Pc Bill Barker who died when Northside Bridge was washed away during last month's floods. The 170ft (52m) bridge across the River Derwent took a week to build. Schoolchildren were first to use the new crossing, to avoid a very long bus trip to school. It took Cockermouth residents, on average, six months to move back into their homes and even ONE YEAR LATER about 30 houses remained unready for their owners to return. GCSE questions may be about long term change or triggers that cause an event; plus immediate or long term consequences for groups; plus the possible responses to disaster.

  4. Worksheet GCSE Case study Revision AQA_A During the previous week- 39mm (1.52in) fell on Monday - that is, during the 24 hours beginning at 9am on Monday - 61mm (2.39in) on Tuesday - 143mm (5.61in) on Wednesday - 247mm (9.71in) on Thursday. The prolonged steady downpour which triggered the flooding began at 2000 on Wednesday and ended, 34 hours later, at 0600 on Friday. In that relatively brief time, it deposited a total of 378mm (14.87in). It takes eight months for that much rain to fall in London. Major rainfall events in the UK, that trigger serious flooding, fall into several different categories, defined by intensity, longevity, & geographical area. Water on the land Cumbria Floods 19th Nov 2009 (M.E.D.C. case study) TASK – Describe the location of Cockermouth, Cumbria. You may wish to refer to direction & distance. Use BOTH human and physical features. TASK – annotate this picture. You are on a committee of town planners and environment agency - How would you prevent future flood damage. ……………………………. …………………………..…. …………………………….. Cockermouth is close to …………………………….. ……………………..……… …………………………….. …………………………….. …………………………….. Flowing west towards the …………………………….. ……………………………. …………………………….. …………………………….. …………………………….. River Derwent (A597 bridge) at Workington http://news.bbc.co.uk/local/cumbria/hi/people_and_places/nature/newsid_8370000/8370332.stm TASK – Read the paragraph about the rainfall that caused the 2009 floods. Draw a graph of the week’s precipitation. What do the words prolonged, average, evaporation and saturated mean? STOP – Did you read the question? It says stop the damage NOT stop all future flooding! Have you thought about cost V benefits?

  5. Worksheet 2 GCSE Case study Revision AQA_A C River Derwent hydrograph 19-11-09 Red = flood event Nov’09 Black = mean annual maximum D B cumecs www.ceh.ac.uk/news/news_archive/2010_news_item_47a.html#fig3 A Time (Number of 15min intervals) Water on the land Cumbria Floods 19th Nov 2009 (M.E.D.C. case study) X • TASK – Look at the sources. • Why is Nov 2009 So unusual even in rainy Cumbria? • Which letter (A,B,C,D) is camera viewpoint? • What types of property have been flooded at X castle X

  6. STAFF NOTES GCSE Case study Revision AQA_A Slideshow – sch comp won’t set up account to download LINK http://funkygeography.blogspot.com/2009/11/cumbria-floods.html Weather information http://www.metoffice.gov.uk/about-us/who/how/case-studies Flood hyrdographs http://www.ceh.ac.uk/news/news_archive/2010_news_item_47a.html http://news.bbc.co.uk/local/cumbria/hi/people_and_places/nature/newsid_8368000/8368580.stm

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