Abstract -- The purpose of this investigation was to determine the status and distribution of sand roller Percopsis transmontana populations in the Willamette River basin. Sand rollers are rare and endemic to...

"The Willamette River has the largest runs of spring chinook salmon of any tributary of the Columbia River rising in Oregon. The run to the Willamette is most unique in that the migrating fish pass up the river...

This document describes the life history and abundance of both the spring Chinook salmon and the Silver salmon in the Willamette River. It also goes into detail about various factors affecting Willamette salmon...

Gerald W. Williams Collection

Illustrated scenarios showing consequences of alternative approaches to development in the valley for the next thirty years.

Recommendations for the Willamette Basin Supplement to the Oregon Plan for Salmon and Watersheds.