There's a dusty old geotech report that just got pulled off the shelf and is the subject of a great deal of attention right now.
OK, Bonus for the day - I went looking for the passage in Cadillac Desert describing when Glen Canyon Dam's spillway chutes were eroded out in '83, "the put-put of the Briggs and Stratton mowing the lush lawn over the turbine rooms..." and found this instead. Go to the Youtube site and there's a bunch more.
Enjoy!