METHODOLOGY FOR RIVER-QUALITY ASSESSMENT WITH APPLICATION TO THE WILLAMETTE RIVER BASIN, OREGON.

It is important that alternative plans for river-quality management be scientifically assessed in terms of their relative ability to produce environmental benefits. To aid this endeavor, this circular series presents a case history of an intensive river-quality assessment in the Willamette River basin, Oregon. The series examines approaches to and results of critical aspects of river-quality assessment. The first several circulars describe approaches for providing technically sound, timely information for river-basin planning and management. The later circulars describe the application of approaches to existing or potential river-quality problems in the Willamette River basin. This publication draws brief conclusions from the results of the other studies to illustrate their impact on resource planning and management in the Willamette River basin. Refs.