Haven't been super deep into those river valleys recently (except driving around circuit road), but from what I have seen they seem clear and good flow; haven't seen any forest fire damage. Drove along jamo woods point roaf yesterday and jamo, howqua and goulburn all looking healthy
I will issue a trip report but I have just spent 4-5 days in the area and hiked the Circuit road to Mt. Thorn to Queen's spur road as a day trek .
Plus @beefa skiing and some friends and I went up, up and up Helicopter spur and over to Hellfire creek saddle via Mt. Magdala summit , and onto Mt. Howitt and over to the X cut saw and down the Stanley name spur track to Queen's spur road and back to the Upper Howqua campsite. There is water flowing everywhere.