I've posted several image galleries of Cross here:
http://www.blueskywest.com/summer/daily_images.htm
You'll have to scroll thru and find those image links. Galleries are from trips on mostly bigger water than you'll find this weekend, which I'd predict about 800 cfs in the Canyon. Cross is similar to the Royal Gorge with regards to flow and rapid dynamics at those flows. I've guided rafts in there till about 500 cfs, which is low water for sure, but always fun.