flood plain (noun)

1. The protagonist built a small cottage on the flood plain, unaware of the impending disaster that would strike.

2. The main characters' secret hideout was located on a secluded flood plain, providing them with a safe place away from society.

3. The modern house design incorporated large windows overlooking the nearby flood plain, creating a serene and picturesque view.

4. In the distant future, an advanced civilization constructed floating cities on flood plains to harness the power of the overflowing water.