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Juvenile rearing habitat for Chinook salmon in the South Fork McKenzie River and McKenzie River, Oregon

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 04:38 AM | Dataset Last Updated: July 20, 2026 at 12:00 AM
This data release contains rasters of modeled juvenile rearing habitat for spring Chinook salmon in the South Fork McKenzie River and McKenzie River, Oregon for a range of streamflows. The study area extends from Cougar Dam on the South Fork McKenzie River to its confluence with the McKenzie River, and continues downstream on the McKenzie River to its confluence with the Willamette River. Usable habitat area for juvenile rearing spring Chinook salmon was modeled for two size classes (fry and parr) by pairing outputs from two-dimensional hydraulic models (Bartelt and White, 2026) with in-basin observations of juvenile Chinook salmon habitat preferences (Hansen and others, 2023). The resulting rasters of juvenile rearing habitat for the South Fork McKenzie River and McKenzie River are organized into four subreaches (described in enclosed README file). For each reach, rasters of juvenile rearing habitat are included for a range of streamflows that range from typical low summer flows (less than or equal to the 1st percentile of mean daily streamflows) to approximately the median annual high flow (approximately the 95th percentile of mean daily streamflows) for each reach. Users are encouraged to read White and others (2026), Hansen and others (2023), and the enclosed README file for descriptions of model development, habitat preference criteria selection, and limitations.

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