That webcam has been down for several weeks, which is a real shame for anyone that doesn't live around here.
There must be a contact facility in the Settle Hydro website; maybe if a few of us sent a message to say how useful we find it and asking if it could be fixed, it'd encourage them to sort it?
Incidentally what may just help is the Penyghent webcam in Horton (Google it; easily found). This gives a glimpse of Brants Gill. (Mind you, it is only a glimpse; it becomes more useful if you look at this webcam regularly, to get a feel for what you can see and how this relates to flows in Brants Gill.)