I typically go straight to the source for bailey gauge info, which is the colorado division of water resources.
Roberts tunnel gauge tells you how much the tunnel is putting in...
The bailey gauge is most popular, but its also prone to more errors in my opinion...
I think that the gauge at grant (just downstream of the tunnel) is better than the bailey gauge at low and high flows.
The AW link must be reporting the wrong gauge I would guess. I will look into it.
Either way... Bailey is good to go at 280ish in my book, and in a drought year... its plenty good.