What is a good word for the edge of a waterfall before it falls?

Question: What is a good word for the edge of a waterfall before it falls!?

A moment ago I posted a poem about frozen Niagara Falls and described "tumbling over the precipice" meaning the point of no return as the water drops over the falls!. But I am not happy with that word!.

My thesaurus really doesn't inspire me for some reason!.

Any suggestions!? obviously looking for a "poetic" noun!.Www@QuestionHome@Com

Best Answer - Chosen by Asker:

I like the idea of the 'brink,' because it has many connotations!. also, 'rim' because it is used for outer space and will expand the idea of the water falling over the edge!.Www@QuestionHome@Com

Bubble Crest evokes freedom, escape, a nice visual!.

also, in tandem with freedom, (above), it evades the
commitmeh (can't seem to ever say or spell that word)
of the overdemanding sense of the Weddih word (above, above)!.Www@QuestionHome@Com

It is the declivity!. While at first this word seems too mechanical or sterile, if you repeat saying it a few times, it begins to sound like an Irish family name!. And I have always liked the Irish, and have fallen for several in my days!.Www@QuestionHome@Com

Cusp, Edge, pinnacle, tip, last bit of earth, end of waters, Beginning of the air, The water's edge!.Www@QuestionHome@Com

cascadingWww@QuestionHome@Com

The abyssyl!.Www@QuestionHome@Com

Viagra oops Niagra~]Www@QuestionHome@Com

The word I would use would be censored by YapooWww@QuestionHome@Com

altar

;)Www@QuestionHome@Com

Many good suggestions here!.!.!.you will find the perfect fit!.Www@QuestionHome@Com

I haven't seen the poem yet, but how about 'swell'!?Www@QuestionHome@Com

threshold
i am obsessed with all the things this word brings outWww@QuestionHome@Com

edgeWww@QuestionHome@Com