"This culvert is at Mass Audubon's Joppa Flats Education Center on the access road to Plum Island. The site is one of the "low spots" on the causeway (Plum Island Turnpike). At the afternoon High Tide during the March 2 storm of 2018, the water rose to ankle-deep at the crown of the road at this spot, which closed access to PI and the rest of the causeway to all but EMS/National Guard vehicles from this point."