80s fantasy series, main character Wren, set in similar setting to Wheel of time, book cover had a water wheel on right, stone work bridge with character and friend/brother going across it a

[Spark]

characters in red or blue jerkins. maybe with "river" or "rivers" in the title???

[Marc *Dark Reader with a Thousand Young! Iä!*]

It may be worth checking this list:
https://www.goodreads.com/list/show/1...