Green Caddis Hatch is on, water on the rise

Good numbers of Green Mckenzie Caddis were out today on the lower Mckenzie. I floated from Belinger to Armitage and fishing was good.  Yellow Soft Hackles, Possie Buggers and Royal Coachman Wets were the ticket early. Around 3:30 the wind laid down again and we found fish in classic big green water. Heavy current edges and riffle drop offs. Fish ate the CDC Green Mckenzie Caddis nicely.  My thermometer showed a reading of 52.1 today which is optimal.  It looks like the river levels is spiking up, how high will they go and how quick will they drop??