Sentence:  There was a very light off-shore wind and scarcely any breakers, so that the approach to the shore was continued without finding bottom; yet though we were already quite close, we saw no indication of any indention in the coast from which even a tiny brooklet might <WSD>issue</WSD>, and certainly no mouth of a large river such as this must necessarily be to freshen the ocean even two hundred yards from shore. 
Meaning of the word marked with <WSD> tags:  To flow out, to proceed from, to come out or from.