When we use the phrase the water's edge are we referring to the water from the vantage point of the land? Can a person in a rowboat, while he is in the middle of a lake, say "I am now going to bring the boat to the water's edge"?
P.S. I ask this question in the spirit of the conversation between Joseph Conrad and Ford Madox Ford, where Ford is trying to explain to Conrad the difference between penniless and without a penny.
Edit: I'm not referring to the figurative use of the term as in "politics ends at the water's edge"