My options are:
Too dense a vegetation to get closer for a better shot to ID beyond the genus, for me. The much lighter green of the under part of the leaves is intriguing.
Very tall (~30 feet), single trunk tree along Putah Creek in Winters, CA.
I believe this is what they call the Goat Willow, however I need to double check.
If anyone can tell me further than the genus, great!