Figure 6. Annual and cumulative extraction volume for instream commercial gravel mining, Chetco River, Oregon, 1993–2008. Values as reported by commercial operators and corroborated with records of Oregon Department of State Lands. Values for Estuary Bar for 1993–99 are estimates provided by Robert Elayer (Tidewater Contractors, Inc., written commun., 2008).

Revised July 2012

First posted May 26, 2010