I live in Golden and like to paddle Black Rock after work. When it starts getting around 1000 cfs I save it for a weekend day or start thinking about the upper or lower run instead.
I have a few friends that paddle it with me regularly but we could always use some new blood or another partner for those days when folks get stuck at work.
Looks like it just jumped up to 350 to 400. This is a good first time level. If you haven't paddled it before but want to start doing it this year then you will want to jump on it before it starts booming...email me if interested.