So you must know the case studies on slides ! Soft options are more ecologically sensitive. The gradient here is steep and the river channel is narrow. River flooding and management issues. Keith Phipps , Working Follow.
The river is allowed to flood naturally in places, to prevent flooding in other areas – for example, near settlements. Enforcing planning regulations and controls may be harder in LEDCs. Building a dam can be very expensive. Keith Phipps , Working Follow. The short, medium and long term strategies used to attempt to manage the floods. Often these steps involve trying to lengthen the amount of time it takes for water to reach the river channel, thereby increasing the lag time. Are you sure you want to Yes No.
River landforms – Eduqas
There is an opportunity in this section to revise the OS skills as on page 37 as well as to introduce photographic river tees case study bbc bitesize etc. Are you sure you want to Yes No. The tables summarise the main flood management techniques. Valley has long profile and steep gradient. This often happens during floods when the river is very powerful. As a result, it commonly faces cyclones and flooding. No notes for slide.
Water is usually stored in a reservoir behind the dam. This means greater interception of rainwater and lower river discharge.
Steps can be taken to manage flooding. There can be resistance to development restrictions in areas where there is a shortage of housing. Clipping is a handy way to collect important slides you want to go back to later.
Lower-course river features include wide flat-bottomed valleys, floodplains and deltas.
It is particularly powerful during floods. Visibility Others can see my Clipboard.
BBC Bitesize – GCSE Geography – River landforms – OCR – Revision 4
Contemporary issues concerning use of hard vs soft strategies and attempts to achieve sustainability. When a river enters the sea carrying a large river tees case study bbc bitesize, the velocity falls and so the load is deposited. The river is allowed to flood naturally in places, to prevent flooding in other areas – for example, near settlements. Villages and communication lines can be found alongside it.
Please consider upgrading your browser software or enabling style sheets CSS if you are able to do so. Upper-course river features include steep-sided V-shaped valleys, interlocking spurs, rapids, waterfalls and gorges.
The heavier rocks are always dropped first. Please consider upgrading your browser software or enabling style sheets CSS if you are able river tees case study bbc bitesize do so. Settlements and agricultural land may be lost when the river valley is flooded to form a reservoir.
Flood management techniques can be divided into hard- and soft- engineering options. The rising limb is where surface run-off and throughflow of water through the soil first reach the river, causing discharge to rise.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Again the case study from slides will be necessary here. The river channel may be widened or deepened allowing it to carry river tees case study bbc bitesize water.
River landforms – AQA
This shows the extent of the flooding compared to the normal view of the river Mississippi. This is a relatively low cost option, which enhances the environmental quality of the drainage basin.
This reduces the chance of flooding and the risk of damage to property. You can change your ad preferences anytime. Find out more about page archiving. Water is held back by the dam and released in a controlled way. Flood Hydrographs Page 45 This hydrograph shows the rising limb, falling limb and lag time.
The channel course of the river can also be altered, diverting floodwaters away from settlements. Keith PhippsWorking Follow. The gradient here is steep and the river channel is narrow. Dams are often built along the course of a river in order to control the amount of discharge.