With all of the rain and the havoc it has caused I think now is a good time for the vocabulary below.

Alud – a landslide
Aislado or incomunicado – isolated or cut off
Avalancha – an avalanche
Baldazo – a rain storm or a lot of rain
Barrial – a lot of mud or mud hole
Barro – mud
Cabeza de agua – a type of flash flood where the stream of water drags everything with it like trees, rocks, boulders and other types of debris.
Cañada – a ravine
Cauce – river bed or channel
Damnificados – homeless victims of a natural disaster
Derrumbe – a landslide
Desastre natural – natural disaster
Desbordarse – to overflow. This means the same as salirse del cauce
Deslave – a wash out
Deslizamiento – landslide
Desprenderse – to break loose like rocks or debris
Inundación repentina – flash flood
La corriente – current or stream
Lodo– mud
Ponerse a salvo – move to safe groud and out of the path of the water
Refugio or albergue – shelter for victims of a natural disaster
Represa or presa – dam
Salirse del cauce – to overflow
Se fue el puente – the bridge went (was destroyed)
Se lleva todo lo que se encuentra a su paso – to destroy of take out everything it finds in its path like rushing water
Socavar, minar or falsear –to undermine
Inundación – a flood
Inundar – to flood

*Pasados por agua – soaked. Empapado is also used to express the same idea.