Look at all the gauges, but the Eagle near minturn is accurate for how the run feels after fall creek. Later in the year it will show the water in the upper section more accurately as well. You can see about how much Fall Creek and other tribs are putting in by subtracting Eagle near Redcliff and Homestake below res from Eagle near Minturn. Cross Creek comes in below the main gauge.
Flows from 500-700 on the Minturn gauge are good medium levels. Once it gets up to and over 1000, its game on (but awesome)!
Beta per Crazy Nate:
Cross creek comes out below the Gilman gauge which is located 500 ft upstream from the hwy 24 bridge south of Minturn near Tigwan road (the take out road). Cross creek comes in a mile or so downstream of the bridge. Gilman is fed by the eagle source, homestake, fall creek, and some other insignificant cfs (probably the Eagle mine and Redcliff waste water plant!) making the EAGLE RIVER NEAR MINTURN, CO gauge a very reliable source for reporting the flow in Gilman below fall creek.
Gilman is probably about the same as Bailey at 300 cfs . . . but shorter . . . and steeper . . . and mankier . . . and with mining chemicals . . . and a ghost town. . . and the rocks talk . . . you know, the same as Bailey. Probably not worth the drive until it hits 400+ cfs.