What's the best way to use data at USGS website? Of what use is the second graph "STAGE"?

I've been using the Castle Rock Station (STREAMFLOW) data even though Mayfield Dam is closer to Blue Creek where I'm banking it. 7500 CFS seems to be the lowest you'd ever want at that point.
[URL=http://wa.water.usgs.gov/rt_cgi/gen_tbl_pg]

[This message has been edited by Ono4fish (edited 01-05-2001).]