Spoke with Hogan about 10 mins ago, and he said the upper part & the rock garden is open and usable, as well as some of the trails. Only gate open is above little blue. He also said it takes about 2 hours for the water to run off after they close.
We'll wait until closer to the event to decide whether or not to postpone/cancel/move it.
Two weeks is a long time from now, & without any more major precipitation, we will be just fine.