Aquatic Plants - invasive

Poison hemlock on Jun 3, 2020

Submitter does not have a specimen
EDRR Status: No Response/Action Required

Description of specimen

I suspect this plant to be Giant Hogweed. It is possible that I am mistaken, but better safe than sorry. Many families with young children use this pathway and the plants have begun leaning to the walkway. I am including pictures.
Possible Giant Hogweed Close up of leaves area where plant is located, just south of new proposed bridge over Fanno Creek