I just read some horrible intel on Deep Creek in regards to fishing quality..
"For reasons I don't pretend to understand, and other fishermen who spend a lot of time in the stream completely agree with me, Deep Creek has declined appreciably in recent years--it is especially noticeable in the last five or six. I've noticed it most in the lower regions but the situation prevails everywhere. I participated in a Park stream survey on the lower end of Deep Creek for two days back in August, and Matt Kulp sent me the results just last week. They pretty much mirror findings from a 1985 survey, but I know that for me fishing is infinitely less productive. Other locals such as Jim Estes and Jim Mills echo my thoughts on this. Maybe I've lost much of whatever ability I ever had, but given the fact I don't seem to have trouble elsewhere, that really isn't likely the case. All I know is that it is troubling and that I'm not the only one who has noticed the decline."
That post was from Jim Casada...the guy that wrote the guidebook on fishing in the Park.
I'm going to see if I can get a reply from him today.....