Figure 36. Bar thickness values used to calculate erosion and deposition volumes from changes in bar area in the Chetco River, Oregon. Values determined by difference of average bar elevation and thalweg elevation at 30-m intervals along the flood-plain centerline, and averaged for each reach. “All bars” include all bars mapped from 2008 LIDAR topography. “New bars” are bars that formed between 2005 and 2008, are typically lower, and are inferred to represent the thickness of new deposits.

Revised July 2012

First posted May 26, 2010