Q.wet soil trees
I read in your artical about trees that thrive in wet soils can you tell me what is the fastest growing that does not get over 40 feet high and has deep roots thanks Rick Hubbard Seattle

I would suggest you contact your County Extension Office and retain a list of trees that meat your criteria in your region.
I've included some links for you as well as a link to help you locate your nearest Extension Office.
https://oregonstate.edu/trees/
http://gardening.wsu.edu/trees-and-shrubs/
http://extension.wsu.edu/chelan-douglas/gardening/generalgardening/trees/
https://www.gardeningknowhow.com/extension-search/