Todd Parr wrote: I can take more pictures if it helps.
When doing a description of a plant you might want to say where you are, take pictures of the bark, more than one of te leaves, and one of the branching structure, an overview- sometimes overall plant shape and height help, and maybe one of the underside of the leaves. Acer negundo is a widespread native tree often found in riparian areas further west.
Western Montana gardener and botanist in zone 6a according to 2012 zone update.
Gardening on lakebed sediments with 7 inch silty clay loam topsoil, 7 inch clay accumulation layer underneath, have added sand in places.