Figure 12. Measured and estimated water temperatures for conditions with and without upstream dams at the Green Peter, Hills Creek, and River Mill dam sites in the Willamette River basin, Oregon, 2001–02. Measured with-dam temperatures are from the Oregon Department of Environmental Quality (ODEQ) for Green Peter and Hills Creek Dams and from USGS station 14210000 for River Mill Dam. Estimated with-dam temperatures for River Mill Dam are from Annear and others (2004a) at Portland State University (PSU).

First posted August 17, 2010