You need a better dictionary. There are MANY aqueducts that do not fit that definition. Like, almost all of them. Most of them resemble canals, except they are not for navigation. The one in question is a large pipeline. Some of the older ones (especially at Owens Valley) are siphons.
Like most long distance utilities, this one has an obvious surface disturbance and a service road.
https://www.google.com/maps/@37.8153482,-118.9813822,13586m/data=!3m1!1e3
The aqueduct is the straight linear disturbance trending northwest near Bald Mountain.
Note that it looks like an uncharted dry lake right next to it. That's an ash pile, a terrible place for an emergency landing. Lots of recent volcanism around there.