I started out at the SSB building (aka, the Consortium Library) and walked towards the Science Building. I took this picture, looking to the right, just before crossing the street at the crosswalk to the Engineering building. See that guardrail? Head toward it and you'll see a road and a pathway that lead behind the Engineering building.
With your back to the creek and looking through the gazebo thingy, you'll see a bush with a large fern to its left. Walk around the right of the bush and Squiggly is hidden under one of the fern fronds laying next to the ground.
You can just see the white bottle under the frond in the lower right corner of the photo. The frond, by the way, was already laying against the ground. No ferns were harmed in hiding Squiggly. The path does continue on behind the Student Union building and ends in the parking lot behind the Wells Fargo Sports Complex so if you are coming from the west end of campus you can just come at it from that direction.