English Communicative Literature Reader : Poem - The Brook Pg 62, Question 8 bit c ) answer. The question is Why has the poet used the word brimming? What kind of a picture does it convey ?

Brimming here means to be abundantly filled with water, to the point of overflow. The poet has used ‘brimming’ to indicate the amount of water in the river which the brook joins finally.

It creates a picture of immense volume and abundance.