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4386362
RIVER PROCESSES AND PRESSURES
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billy larry jeff
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Mind Map by
Alex Gray
, updated more than 1 year ago
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Created by
Alex Gray
almost 9 years ago
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Resource summary
RIVER PROCESSES AND PRESSURES
FLOODING
BANGLADESH
8th July 2004- September
multiple cyclones and the Himalayas melting
800,000 ha flooded
BOSCASTLE
18th august 2004
600mm of rain in 2 hours
£4.6 million worth of repairs
hurricane Alex
STORM HYDROGRAPH
lag time
rising limb / falling limb
peak rain fall / peak discharge
discharge
amount or type of rainfall,temprature
rock type permeable/inprmeable
previous weather conditions
causes
physical-prolonged rain
deforestation
DAMS AND RESOVIORS
Kielder water Northumberland
£167 million to build
took 7 years to build
advantages
supplies water to NW england
brings tourisum to the area
looks good
£6 million a year
disadvantages
7 familes and farming communities were rehomed
its never been less than 90% full sop some say its useless
1.5 million trees chopped down
flooded a previously existing valley
forestry commission employees lost jobs
its sustainably managed
each year the forestry coummision plant 3.5 million trees to replaced the cut down ones
opened in 1982
dam
has an obsorbortory
landforms
WHAT THE HELLS AN OX BOW LAKE
waterfall
gorges
valleys
proceses
erosion
solution
attrition
hydrochloric action
abrasion
deposition
river valleys
long profile
upper
lower
middle
cross section
managing rivers
ENGENERING
HARD
THREE GORGES DAM
IN CHINA $22.6 BILLION TO BULID AND IS IN CHINA
leves and channel straightening
SOFT
forestry programs
flood warning scheme
do nothing
river tees
starts off in a mash where 120ml of water gets stored up
middle course wide and deep
lower course is industrial
just south of Newcastle and east of Middlesbrough
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