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There's no getting to the nearest bank from here (9)

Ross

I believe the answer is:

midstream

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'bank from here' is the definition.
The definition and answer can be both natural objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?

I cannot understand how the remainder of the clue works.

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(Other definitions for midstream that I've seen before include "Furthest from banks" , "Part-way through a course" , "centre" , "At halfway point in current" , "halfway across the water" .)

I've seen this clue in The Globe and Mail.
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