I took SW Dosch Road downhill to Beaverton-Hillsdale Highway. Heading west I followed Fanno Creek starting around Fanno Creek Natural Area Unit #001.
Friday, October 16, 2020
45.48252777777778, -122.71188333333333
google map 
45.48549722222222, -122.71707777777777
Here we are just short of FCNA*002, 003 & 004, looking east where Restoration Creek joins from the left.
See Portland Parks FCNA unit maps. site