Rivers: Sustainable decision making geography

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is water flowing across the surface of the earth
Interception is water on objects
is water soaking into soil
Thorughflow is when water seeps through towards a
- downward movement of water below water table
transpiration water from plant's

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A drainage basin is...

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the boundary of a basin is called its...

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Large rivers have drainage basins eg. the

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precipitation outside the river's drainage basin will...

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Physical causes of flooding
heavy rain - ground becomes so can't absorb any more
of heavy rain - ground can't absorb water so runs into which then burst = floods
Rapid snow - increases water into river, can be too much so river its banks.

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Human causes of flooding
- + concrete so water doesn't drains take it straight to rivers decreasing time
- less so more . Also more washed into rivers reducing river
River - effect river

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Label the graph

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label hydrograph

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label the hydrograoh

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Sustainable flood control includes:
new - rivers are monitored so can be given
in upper catchment area - more
and reservoirs - control of discharge and used for power and lakes used for

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Today focus on sustainable river management called integrated management, which uses

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agency warn about floods, their advice is to:
prepare kits
keep phone
prepare
move / goods to places

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Soft engineering includes:
- stop planning permission on flood
plant water plants to soak up water and reduce water
- increase interception
digging a flood channel - provide another path for water when to high
to remove - increase capacity

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engineering includes
building to increase of the river
channelisation - and river so it flows
Building and reservoirs - water slowly , stop becoming overwhelmed

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Which are true for channelisation

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Hydraulic action is when rocks collide, eroding cliff/bank as they scrape of material with them

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Attrition is when rocks collide with one another so breaking into smaller pices

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Abrasion is the force of running water undercutting banks and eroding beds

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Solution is...

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What erosion occurs in the plunge pool?

attrition

abrasion

solution

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undercutting is caused by from the of the river and action from the force of water

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when waterfalls move upstream what do they create

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In water falls an overhang is caused by . This occurs because there is a of rock above rock

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large rocks being dragged and rolled along the bed is called

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smaller sediment being bounced along the bed of the river

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fine particles of silt/clay held in the water

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As the river flows through lower lying land:
Discharge is
gradient is
bedload is
erosion more prominent than downwards erosion

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Formation of meander and ox bow lake
1) water flows faster on so more quickly, occurs on inside
2) river so then takes route
3) more water flows through straight route
4) cut off
5) ox bow forms and eventually up

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A river drops its load when...

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❌ sediment is deposited first

larger

smaller

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pebbles, gravel, sand and silt is deposited in the

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dissolved load is carried out to sea

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Test sobre Rivers: Sustainable decision making geography, creado por 11mbarnet el 04/05/2016.

Rivers: Sustainable decision making geography

is water flowing across the surface of the earth Interception is water on objects is water soaking into soil Thorughflow is when water seeps through towards a - downward movement of water below water table transpiration water from plant's

A drainage basin is...

the boundary of a basin is called its...

Large rivers have drainage basins eg. the

precipitation outside the river's drainage basin will...

Physical causes of flooding heavy rain - ground becomes so can't absorb any more of heavy rain - ground can't absorb water so runs into which then burst = floods Rapid snow - increases water into river, can be too much so river its banks.

Human causes of flooding - + concrete so water doesn't drains take it straight to rivers decreasing time - less so more . Also more washed into rivers reducing river River - effect river

Label the graph

label hydrograph

label the hydrograoh

Sustainable flood control includes: new - rivers are monitored so can be given in upper catchment area - more and reservoirs - control of discharge and used for power and lakes used for

Today focus on sustainable river management called integrated management, which uses

agency warn about floods, their advice is to: prepare kits keep phone prepare move / goods to places

Soft engineering includes: - stop planning permission on flood plant water plants to soak up water and reduce water - increase interception digging a flood channel - provide another path for water when to high to remove - increase capacity

engineering includes building to increase of the river channelisation - and river so it flows Building and reservoirs - water slowly , stop becoming overwhelmed

Which are true for channelisation

Hydraulic action is when rocks collide, eroding cliff/bank as they scrape of material with them

Attrition is when rocks collide with one another so breaking into smaller pices

Abrasion is the force of running water undercutting banks and eroding beds

Solution is...

is water flowing across the surface of the earth
Interception is water on objects
is water soaking into soil
Thorughflow is when water seeps through towards a
- downward movement of water below water table
transpiration water from plant's

Physical causes of flooding
heavy rain - ground becomes so can't absorb any more
of heavy rain - ground can't absorb water so runs into which then burst = floods
Rapid snow - increases water into river, can be too much so river its banks.

Human causes of flooding
- + concrete so water doesn't drains take it straight to rivers decreasing time
- less so more . Also more washed into rivers reducing river
River - effect river

Sustainable flood control includes:
new - rivers are monitored so can be given
in upper catchment area - more
and reservoirs - control of discharge and used for power and lakes used for

agency warn about floods, their advice is to:
prepare kits
keep phone
prepare
move / goods to places

Soft engineering includes:
- stop planning permission on flood
plant water plants to soak up water and reduce water
- increase interception
digging a flood channel - provide another path for water when to high
to remove - increase capacity

engineering includes
building to increase of the river
channelisation - and river so it flows
Building and reservoirs - water slowly , stop becoming overwhelmed

As the river flows through lower lying land:
Discharge is
gradient is
bedload is
erosion more prominent than downwards erosion

Formation of meander and ox bow lake
1) water flows faster on so more quickly, occurs on inside
2) river so then takes route
3) more water flows through straight route
4) cut off
5) ox bow forms and eventually up

Mouth of a river
forms a wide funnel shape called an
Estuaries are and a mix of and salt water
deposition of and here form mud and marshes