Usually I see a stream in an “instant” (and then leave).
Always left lingering for me is much it adds up to over a year.
In this case, at Deer Creek in Harford County, Maryland, the answer is 80 cubic feet per second (as filmed on June 29th) and 23 Empire state-sized barrel full per year (assuming that constant flow rate).
There’s no holding that water back.
Just a few miles upstream is Eden Mill Dam. It used to provide electricity to the Dairy Farmer’s just across the border in Pennsylvania. Now its a scenic spot that attracts hikers, historians and an occasional hydrologist.
As for the water, it just sort of slides on by.