If you want to wade and fly fish the ENO you probably need to go up around Penny's Bend area. The Eno and Flat both run between 6 to 8 feet deep until you get a ways upstream. The Flat from the 75 bridge downstream for a couple of miles could be waded but not upstream from the bridge--too deep. I used to live on the Flat upstream from 501 and used to wade it often. Even up there it wasn't unusual to step off in a hole that was 5 or 6 feet deep !! Be careful !!