Umpqua River Oregon Days Creek PhotoMosaic 1967
The Umpqua River drains 12,103 square kilometers (4,673 square miles) in southwest Oregon before flowing 
into the Pacific Ocean at Winchester Bay near the city of Reedsport. In cooperation with the Portland District 
of the U.S. Army Corps of Engineers (USACE), the USGS evaluated sediment transport and gravel storage …