[General] during the flood season

[Silverobama]

Hi.

Are my two sentences idiomatic? Will native speakers use them?

1) During the flood season, the river overruns its banks for several miles.
2) The invading army overran a few scattered guerrilla outposts.

I think they're natural but maybe the second one is more specific. One might read it in newspapers about war or something. May I have your opinion?

 

[tedmc]

I would use overflows for 1.

 

[teechar]

1) During the flood season, the river [STRIKE]overruns[/STRIKE] rises, and the water extends [STRIKE]its banks[/STRIKE] for several miles beyond its banks.

Try that.

2) The invading army overran a few scattered guerrilla outposts.

OK.

 

[Charlie Bernstein]

I agree with Tedmc. The rest looks fine to me.