Disturbance from propellers??

[Brian1888]

Hi, im planning a flight at a secluded mini/medium waterfall in the next few months....lift off will be from waters level....any possible issues? Here is a shot i took last year.

 

[N017RW]

Beware of downdraft near the falling water. It drags air down with it.

 

[RodPad]

Hi, im planning a flight at a secluded mini/medium waterfall in the next few months....lift off will be from waters level....any possible issues? Here is a shot i took last year.

What was this part?
(disturbance-from-propellers)

I got some waterfalls I would like to do, are planning on time lapse, still, video or all?

I figured I would need learn about the drafts before I get to close, also all the water spray in the air, if you get to close.