You dont suppose its picking up the shimmer on the water as motion do you?
Very possible. I've tried every combo I could think of with the tripwires etc over the past year. I never set any past the far side of the driveway, let alone include the water. I can get it to track fairly well, someone walking in the back yard or large critters. But then I get so many phantom trackings on top of that, it's pointless. Glad that cams purpose is just watching critters.