You axed all kinds of questions all over the place. So not exactly sure what info you want.
So I'll just babble a bit and you can direct whatever way you like.
You say you love backpacking Yosemite. So I assume you have a good map and been a few
places. Right now, any creek or stream with a name for sure will give pause to cross.
Most, for most people, will necessitate a log to cross. The good thing is that there are a lot
of logs out there... so most are not a huge issue to get across if you are willing to
take the time to find one... and have decent balance. However most of the big boys
just aren't worth the risk to cross though so you have to xcountry a lot if you really
want to get way up der perhaps.
Anyway, I'm just flapping my wings...
The flooding and snow are overblown by the media mostly. Yes, there's still a lot out there...
but now it is consolidated so much that you can walk atop it no problemo. 5 ft. 10ft.
It doesn't matter. Walk away. Maybe bring spikies for early morning walking.
Snow Creek Cabin - up Snow Creek is no issue whatsoever. The cabin will be closed though so
don't think about staying in the cabin. From GP it appears the trail is pretty clear...
As is most of the north rim... so only the stream crossings would give pause and perhaps
Eagle Peak Meadows area...
It seems a lot of people of bailing so I wouldn't doubt you can get Happy Isles if you go on a weekday.