floods

types

rivers

coastal

estuarines

catastrophic

Excessof water

is

causes

Rain fall

Rivers rising

Ice melting

tsunamis

Tides due To the moon

consequenses

Dissolvecontruction

Kill animal andpeople

What are food? How do floods occurr?

comparison How do floods cause damage?

How do floods progress? Principal types of flood

images glossary

¿Qué nos gustaría saber?

Is a when the water level in an Is a when the water level in an area rises where there was area rises where there was normally little or nome before.normally little or nome before.

All floods are not alike.All floods are not alike.Can be dramatic and quick or Can be dramatic and quick or

slow and creeping.slow and creeping.Are natural phenomena common Are natural phenomena common

in many places around the world in many places around the world where there is either a river where there is either a river nearby or the local.nearby or the local.

A diagram of a A diagram of a normal waternormal water

A diagrama of a flooded area.

HOW DO FLOODS OCCUR?HOW DO FLOODS OCCUR? Floods are caused by excess water:Floods are caused by excess water:• Rain fall (cyclones or hurricanes)Rain fall (cyclones or hurricanes)• Rivers rising.Rivers rising.• Ice melting.Ice melting.• Tides due to the moon.Tides due to the moon.• Tsunamis.Tsunamis.

How do floods cause How do floods cause damage?damage?

Play water damage: This damage basically soaks everything sometimes it can dissolve foundations and make the ground unstable and muddy.

Rushing water damage: Due to the water crashing into buildings, cars and other things, this is flood water that often kills people and animals.

How do floods progress?How do floods progress?

Can progress at different speeds:Can progress at different speeds:o Fast floods or flash flods ofeten ocurr in Fast floods or flash flods ofeten ocurr in

deserts where it rains in one place and deserts where it rains in one place and water starts to.water starts to.

o Gradual floods may take a few days to build Gradual floods may take a few days to build up to dngerous levels. Others may take a up to dngerous levels. Others may take a few years.few years.

Principal types of floodPrincipal types of flood Riverine floodsRiverine floods • Slow kinds:Slow kinds: Runoff from sustained rainfall or rapid snow Runoff from sustained rainfall or rapid snow

melt exceeding the capacity of a river's channel. Causes melt exceeding the capacity of a river's channel. Causes include heavy rains from monsoons, hurricanes and tropical include heavy rains from monsoons, hurricanes and tropical depressions, foreign winds and warm rain. depressions, foreign winds and warm rain.

• Fast kinds:Fast kinds: include flash floods resulting from intense include flash floods resulting from intense thunderstorms.thunderstorms.

Estuarine floodsEstuarine floods Commonly caused by a combination of sea tidal surges Commonly caused by a combination of sea tidal surges

caused by storm-force winds. caused by storm-force winds. Coastal floodsCoastal floods Caused by severe sea storms, or as a result of another Caused by severe sea storms, or as a result of another

hazard.hazard.Catastrophic floodsCatastrophic floods Caused by a significant and unexpected event.Caused by a significant and unexpected event.

• The River Berounka, The River Berounka, Czech RepublicCzech Republic, ,

• Australia Australia

• FloridaFlorida, , United StatesUnited States

• Flash flooding Flash flooding

GLOSSARY:GLOSSARY:• DAMAGE: daño.DAMAGE: daño.• DAM: dique.DAM: dique.• LEVEL: nivel.LEVEL: nivel.• DEMP: basurero.DEMP: basurero.• MUD: barro.MUD: barro.• ICE MELTING: derretimiento de hielo.ICE MELTING: derretimiento de hielo.• FLASH: repentina.FLASH: repentina.• RAIN: lluvia.RAIN: lluvia.• DANGEROUS: peligrosos.DANGEROUS: peligrosos.• STILL: calma.STILL: calma.• RIVER: río. RIVER: río.

¿QÚE NOS GUSTARIA ¿QÚE NOS GUSTARIA SABER?SABER?• Que podemos hacer para que estas Que podemos hacer para que estas

inundaciones no ocurran o por lo inundaciones no ocurran o por lo menos disminuyan en el mundo.menos disminuyan en el mundo.

• Que precauciones debemos tener si Que precauciones debemos tener si ocurren en los lugares donde vivimos.ocurren en los lugares donde vivimos.

• Donde debemos acudir en estos casos.Donde debemos acudir en estos casos.• Que consecuencias traerán en los Que consecuencias traerán en los

próximos años y como avanzaran. próximos años y como avanzaran.