Check out this link : http://www.usbr.gov/lc/riverops.html
Scroll down the page to projected operations for Davis and Parker Dam. My Shockwave doesn't get wet at less than 9000 cfs flow from Parker Dam.
Matt
We hauled 6 loads of these bastards out of contactor influent channel 2 weeks ago. Our 30 foot drop gates couldn't form a seal because of how deep the shells were.