Scientific Investigations Report 2013–5001
![]() Figure 8. Relation between the average monthly water-column chlorophyll-a concentrations in the Clackamas River at Oregon City, Oregon, in 2010 and 2011, and the 9-year period of record (2001–11). |
First posted February 11, 2013 For additional information contact: Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |