Onomatopoeia is used in stanza 3 of "Wind and water and stone" the phrase "the water murmurs as it goes"is an onomatopoeia becau
se the word murmurs. Repetition is used at the end of the stanza in the phrase "Wind and water and stone" as water, stone, and wind were already said. Alliteration is used in the first two line "The wind sings in it's turnings The water murmurs as it goes," the words, sings, turnings, murmurs, and goes all have the letter "s" at the end. The effect of the sound device on the overall meaning of the poem is that at the end of every stanza it says wind water, and stone in the order they were in according to the line, that gives off a deja vu feel when reading the poem.
This poem is referring to the poem ''Wind, Water and Stone'' who was written by Spanish writer Octavio Paz in XX century.
Statements in your question are correct because your description of the literary devices is good and correct and it is describing properly every literary device that you counted here, for example, onomatopoeia, alliteration and more.
This poem is describing how wind, water and stone are bounded and they are always going with each other.
