Source: The Great Interpretation of Dreams (Ibn Sirin)
(By analogy with running water) A waterfall in a dream indicates continuous sustenance and lasting goodness. Its sound indicates fame and good reputation.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
A waterfall indicates a generous, bountiful man. Bathing in its water indicates the removal of worry and healing.
Source: Signs in the Science of Expressions (Ibn Shaheen)
A waterfall is interpreted as goodness and blessing. Whoever sees himself standing under it will attain abundant goodness.