I've floated the Escalante twice, once in 2005 with monster snowpack/runoff and last year with just enough water to make it doable. I live close by and have seen people float it almost every year. Its more about timing than huge snowpack, really. You just have to be flexible enough to jump on the river when the melt starts and the snow comes off of the Boulder. Last year snowpack wasn't fantastic and we left a little late, June 1st, and still had a great trip. It would have been better in early May, though. Based on what I see at the Widtsoe snotel site, the river will definitely be runnable, just remain flexible on your trip dates.
Both times I've floated it, our group has gone all the way to Lake Powell and shuttled out, the first time to Wahweap, the second time to Bullfrog. Last year the delta where the river emptied into the Lake was pretty rough and very braided. However, it had to be better than the climb out at Coyote Gulch, it looks like a beast. We've always used duckies, rafts are out of the question. The river is way too narrow. I've seen canoes do it when the water was higher, and a few hard shelled kayaks, but I'm convinced the ducky is the way to go. I've seen quite a few of the packrafts do it in the last few years.
There are really no representative stream gauges on the river. There's one on a tributary, Pine Creek, but Boulder Creek is the largest contributor and there is no gauge on it anymore. It makes it kind of crap shoot as to flow conditions. Last year the Escalante was running ~20 cfs at the highway 12 bridge when we put in. It was a rough few miles to Boulder Creek, then the flow tripled with Boulder Creek's input and we did pretty well.
I know that there are a couple businesses in Escalante, Utah that will run a shuttle. They might have some additional info on conditions as well.
I felt like the most dangerous part of the float was the piled up Russian Olive that had been cut and piled in the river. Without a huge flood to wash that stuff down, it piles up and is a little scary.
What a great trip the Escalante is! The shuttle logistics and the runoff timing is a little complicated, but if you can pull it off, you will never forget it.
Here's a few pics of my two trips down...
Escalante River Trip 2010 - a set on Flickr
Escalante River Trip 2005 - a set on Flickr
Let me know if you have any other questions, maybe I can help.