Yep. That’s where Neri dumped Fredo’s body.
I think that was supposed to be Lake Tahoe. There are no thick forests around Lake Mead.
Now, now...that was Lake Tahoe...and if I remember correctly, Talia Shire’s line in the Godfather III (give it a pass) was something along the lines of “Poor Freddo drowning in the lake.” Sure he did.