To see waterfall in your dream refers to health problems or money that will be spent because of this.
To dream that you stand under waterfall or are washed with waterfall signifies that you will help your family elders about their health problems financially. Alternatively, it means that you will spend a lot of money because of your health as soon as possible.
To see of drinking water from waterfall in your dream indicates that you will overcome your health problems as soon as possible. If you see a person who drinks water from waterfall in your dream, it means that you will have a trip and you will have an unimportant disease during this trip.
To dream that you fall into a waterfall signifies that you will consume all your properties soon. If you see a person who falls into a waterfall, it symbolizes properties that you will have.
To see that you jump into waterfall in your dream implies that one of your relatives will want financial aid from you but you won't help him/her. If you see a person who jumps into waterfall, it symbolizes cooperation within family, share of some commodities or things.