Generally speaking most of Utah’s small streams are inaccessible in the winter months due to snow.
We currently are sitting on a statewide snowpack that is between 50 and 70 percent of normal. Therefore some areas are more accessible for winter angling opportunities than usual.
I have not ventured out to any small streams recently, but I’d expect to see some midge or early baetis activity if you were to go searching for some solitude.