State of the Science for Coldwater Refuges in the Willamette River

Many regulatory, management, and conservation organizations are interested in protecting and increasing coldwater refuges and thermal diversity for Chinook salmon, steelhead, and other natives fishes in the Willamette River basin.

This study is synthesizing current and emerging science related to coldwater ref- uges and thermal diversity. It is also developing conceptual frameworks for under- standing the variation in coldwater refuges and thermal conditions and how that variation relates to the abundance and composition of the native fish community.

This information will be used to identify strategic actions to protect, enhance, and restore, where possible, thermal diversity and coldwater refuges.