Trail camera on a creek

Placed this camera looking at a small waterfall on this creek trying to get a picture of an otter. They use this creek to get into some large ponds for feeding and having their young. Wasn't sure if they go over the falls or use a trail that goes around, not even sure if they go down the creek when leaving the ponds.

Only picture I got in a 3 week checking was this possum crossing over the falls, will leave the camera here till fall to see what animals travel the creek.