4 weekends ago I was in Yosemite and there was plenty of water. The snow line was at about 8k feet and there was enough snow.
However, last weekend I was in Kings Canyon ... about 2 hours south - and the water was somewhat scarce
It was there and it was flowing but I could see it drying up this year.
Some of the areas which clearly had running water in the past were dry.
I suspect things are rough the further south you go (warmer) but probably are ok if you go further north.
Probably an early start is a good idea!