Tree root depth

freakyspeaky

Hello
I am looking for a resource which can tell me the average rooting depth of many different tree species - mostly ones which are planted in cities.
Is there any online resource?

Thanks

cassie.a.stewart

https://www.deeproot.com/blog/blog-entries/how-deep-do-tree-roots-really-grow have a read of this. 

freakyspeaky

thanks