Hard Engineering

Mind Map by jessica.simms, updated more than 1 year ago
Created by jessica.simms over 5 years ago


a level Geography Mind Map on Hard Engineering, created by jessica.simms on 02/22/2015.

Resource summary

Hard Engineering
1 Dams
1.1 A barrier to obstruct the flow of water
1.1.1 +Highly effective
1.1.2 + Supply HEP
1.1.3 -Silt collects behind dams
1.1.4 +Create jobs
1.1.5 - Could force people out of homes
1.1.6 - Unnatural
1.1.7 -Expensive
1.1.8 -Flood areas upstream
1.2 CASE STUDY Three gorges dam
2 Removal of settlements
2.1 -Expensive/Complicated
2.2 + 100% flood risk reduction
3 Flood interception Schemes
3.1 building a bypass channel,using a new channel to store excess water, using embanments
3.1.1 -Expensive
3.1.2 +reduces flood risk in towns/cities
4 Flood storage resevoirs
4.1 store excess water in upper reaches of catchment
4.1.1 +Natural looking
4.1.2 + Can provide water elsewhere
4.1.3 -Requires a lot of land
4.1.4 -Expensive due to buying land Unless built on cheap high land (little of this in the U.k)
5 Relief channels
5.1 redirect water around a settlement to re-enter the main channel later
5.1.1 +can be used to supply water as well
5.1.2 +Natural looking
5.1.3 -Expensive so can only be used where it is impossible to alter existing channel
6 Channel improvements
6.1 Smoother(with concrete), dredging, channel straightening
6.1.1 +Move water out of area quicker
6.1.2 +Increases channel capacity
6.1.3 +Accomodates larger discharge
6.1.4 -can increase risk of flooding downstream
6.1.5 -requires maintenence
6.1.6 -Short term benefits
6.1.7 -More erosion downstream
6.1.8 -Enlarged channels often arent used and fill with weeds
7 Flood walls, levees and embankments
7.1 Walls and levees add height to channel
7.1.1 +Embankments(if set back from channel) can provide storage for excess flood waters while inhabited areas remain unaffected
7.1.2 -Expensive
7.1.3 - Eye sore
7.1.4 -Could speed up water downstream and flood somewhere else
Show full summary Hide full summary


Comparing a major flood in an MEDC and an LEDC- CASE STUDY!
The Coastal System
Phoebe Fletcher
Demographic Transition Model (DTM)
Phoebe Fletcher
Factors affecting the energy of rivers
Phoebe Fletcher
Geopolitics of Energy
Phoebe Fletcher
Using GoConqr to study geography
Sarah Egan
A Level: English language and literature technique = Dramatic terms
Jessica 'JessieB
Biological Psychology - Stress
Gurdev Manchanda
All AS Maths Equations/Calculations and Questions
OCR Chemistry - Atoms, Bonds and Groups (Definitions)
Continents & Oceans
Thomas Yoachim