Drainage area: ~332 sq.mi.

At the listed put-in drainage area is ~332 square miles (as calculated by USGS StreamStats 4.2.0 software).

After 4.6 miles (after confluence with Clear Creek), the combined drainage becomes ~514 square miles.

After another 4.3 miles at the confluence with the Emory, drainage becomes ~613 square miles for the final mile to the listed take-out.