Check the latest streamflow data on the USGS website by clicking on the links below. I recommend that you look at streamflow in cubic feet per second.
While there is usually a really good bite right before inclimate weather, Steelhead bite well after a good rain and water levels are dropping back down.
Weekly Report: 12/16/24 - With the melt and rain that happened over the weekend some guys got lucky Saturday and got into some fish before water levels came up. Currently the tributaries are all in the 1,000 CFS or more making them a little too unsafe to fish. There are colder temps coming later in the week which may keep any precipitation that falls a nice dusting of snow. If that is the case the water levels should drop towards the end of the week and into the weekend. If you are willing the brave the cold, you may get into some good steelhead.
Upper clear fork is falling and should be fishable. They dropped the lower over the weekend but have since brought it back up to 1.4 ft. Reports have been not that great on the lower though. Apple is still fishing well down in the lower section of the park and I expect it to stay that way for a while.
RIVER Best CFS for fishing
Grand River (Steelhead Ally) 250 - 750
Chagrin River (Steelhead Ally) 150 - 350
Cuyahoga River (Steelhead Ally) 200 -350
Conneaut Creek (Steelhead Ally) 200 - 350
Rocky River (Steelhead Ally) 150 - 250
Vermilion River (Steelhead Ally) 100 - 200
Ashtabula (Steelhead Ally) No Information but watch the Conneaut for similar data
No CFS so use gauge height
Clear Fork (Upper Section) 1.8 - 2.10
Clear Fork (Lower Section) .5 - 2
Neshannock Creek PA (this links to Neshannock Creek Fly Shop which has a report on the Neshannock as well as several links to streamflow data for rivers and streams in PA)