USGS Gauge: 192 sq.mi.

USGS lists their gauge 'on right bank at Cedar Street in Wolverine, 0.2 mi downstream from West Branch, and 11.7 mi upstream from mouth' and shows 'Elevation of gage is 770 ft.'

Historical data lists 10% flow exceeds 290 cfs, 90% flow exceeds 158 cfs, giving a 10/90 ratio of ~1.8, confirming that flows are extremely steady (not 'flashy').