Image of rivers in works by Coleridge

Hello folks! Looking for a bit of input here, I seem to be having trouble developing a thesis from this question "analyze the key image of rivers in works by Wordsworth and Coleridge" considering that I cant find any poems that speak of rivers directly... am I missing something? would anyone be able to provide a little insight?! thanks

Seamus Perry should help you with Kubla Khan. I don't know who's offered an appraisal of Wordsworth's Tintern Abbey.

Now what tells me you are studying in USA or Canada?;)

Read Kubla Khan, it is about (amongst other things) the underground river.