Seeking Words from the Wise
Well that disqualifies me ...
But I'll add what I can.
There's a stream gauge on the Paria River where US89 crosses, right next to the office where you pick up your permit.
It certainly doesn't answer all the questions, but it's one piece of information to add to your dataset. This has zero bearing on what is happening or has happened in Buckskin Gulch, only the Paria. When we were there it was running between 10-20cfs and had been consistent for a couple of weeks before our trip.
https://waterdata.usgs.gov/ut/nwis/uv?site_no=09381800
There are no gauges upstream of Buckskin, which starts in the highlands of Bryce National Park - over 8000 feet. So snowmelt may be an issue even if it hasn't rained recently.
I found good information by scouring social media the week before our trip. People like to post photos of Buckskin and the Paria. Search Facebook and Instagram hashtags and locations nearby. Buckskin, wirepass, paria, etc. I was able to send messages and get replies from people who had been there just before us so we were able to confirm that we would not need to swim or bring tubes to float our packs. That was very useful as far as planning what to bring.
Assuming the weather cooperates and the water levels are safe, here are some of my thoughts.
Plan to be cold. Numbingly cold. There will be pools of water in Buckskin Gulch that most likely will require you to get parts of you wet that you don't want to be wet. There is no sun in the canyon, so even when you are back walking on dry ground, there's no warm up. I wore super-thick wool socks and beater shoes. I was happy with that solution. Others had neoprene socks but I think the result was similar. The water in the Buckskin pools is somewhere between 38-45 degrees. Waterproof shoes are a bad idea because it will only prevent your wet shoes from drying quickly when you're out of the water.
The first day in Buckskin is the biggest challenge. There will only be fresh drinking water at the large camp area just above the confluence with the Paria. There's plenty of room for multiple groups here but plan on sharing. Make sure to have your wag bags here because there is absolutely nowhere to "go". I can only imagine how gross this area would be if people were digging catholes all over the place!
We found the water in the Paria to be a little bit warmer than Buckskin, and much shallower. Generally not more than ankle deep. From the confluence downstream the hiking got easier and the water warmer. There are more opportunities for camping and springs with fresh water. Keep an eye out for them and you'll see them bubbling up or coming out of the walls.
It's a spectacular trip. If I were to do it again, I think I'd try for a little later ... end of April perhaps. The problem is that last day hiking to Lee's Ferry is hot and exposed so you don't want to wait until it's too warm out!