Willamette River Water Quality Map

This map highlights water pollution issues in the Willamette River system. It was produced by the Corvallis Environmental Center and the Institute for Water and Watersheds and published in August of 2008. It updates and expands on the Willamette Water Quality Map compiled by the Corvallis Environmental Center in 1997.

Read an OSU press release about the map.

There are two ways to view the map:

1. Purchase a high-quality color poster of the map from the Corvallis Environmental Center or the OSU Bookstore for $10.
2. Download and print a lower-resolution version of the map as an Adobe PDF file. Please note that the optimal printing size is 24 x 38 inches but it can be printed on smaller paper by choosing the "Fit to Printable Area" choice.
   • map front - WillametteMapFrontAug2009.pdf (18 MB)
   • map back - WillametteMapBackAug2009.pdf (5 MB)