Spring Creek - 1600N Rd to RR bridge above Illinois River confluence (6.8 miles) (IL)
Almost certainly too low. (Likely under 100 cfs.)
Drainage area at our listed put-in is approximately 34 sq.mi. as calculated via USGS StreamStats Beta software. (This is less than half the size of the nearby Little Vermilion at its put-in.) By the take-out, it has increased to 50.5 sq.mi. (nearly a 50% increase, but still quite small).