And it's gone....
Bob, It's source is Horsetooth as shown here:
Detail Graph
If memory serves the water year ends on 10/31 so water users who have storage and have not already drawn their shares for the year will pull it out in late October. Which I think also is the explanation for O-Hole's name & flows.
It was definitely dropping when I was on it today and was lower than the last 2 days, but I'm not going to argue given it's 10/31 and I was kayaking!
- John