Willamette River decadal assessment fish dataset

Principal Investigator(s):  View help for Principal Investigator(s) US Department of Agriculture; US Forest Service

Version:  View help for Version V1

Name File Type Size Last Modified
RDS-2024-0057.zip application/zip 930.4 KB 05/30/2026 12:51:PM
RDS-2024-0057_Metadata_Fileindex.zip application/zip 16.7 KB 05/30/2026 12:51:PM
catalog_detail.pdf application/pdf 111 KB 05/30/2026 09:05:PM
file_index.pdf application/pdf 59.5 KB 05/30/2026 12:51:PM
metadata.pdf application/pdf 161.9 KB 05/30/2026 12:51:PM

Project Citation: 

US Department of Agriculture, and US Forest Service. Willamette River decadal assessment fish dataset. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2026-05-31. https://doi.org/10.3886/E248751V1

Project Description

Project Title:  View help for Project Title Willamette River decadal assessment fish dataset
Summary:  View help for Summary Natural habitats and communities may change for a variety of reasons but understanding if a change has occurred and its extent requires knowing the original state. The Willamette River Decadal Assessment is an extensive survey primarily of the middle and upper portions of the Willamette River, Oregon, serving as a measurement of baseline conditions for future decades. This Willamette Decadal Assessment fish dataset consists of tabular data from freshwater fish surveys over multiple years in 2 decades, 2011-2013 and 2021-2023. Each decade contains sampling locations within the Willamette River between the mouth (confluence with Columbia River) and the upstream confluence with the McKenzie River. Sampling sites used the SLICES framework for dividing the Willamette River into approximately 1 kilometer river sections of either the mainstem river or off-channel slough areas. Thirteen sentinel slices were included in the survey each year, although sampling some slices was not permitted in certain years due to high water temperatures. Additional sampling sites were randomly selected from the remaining slices. Sampling included boat electroshocking passes and backpack electrofishing samples. Captured native and nonnative individuals were identified to species, except for lamprey. Fish observed but not captured or measured are identified by a separate code. Tabular data include information such as GPS coordinates, fish length, weight, mortality, and species.
Original Distribution URL:  View help for Original Distribution URL https://www.fs.usda.gov/rds/archive/catalog/RDS-2024-0057

Scope of Project

Subject Terms:  View help for Subject Terms biota; environment; inlandWaters; Ecology; Ecosystems; Environment; Animal ecology; Inventory; Monitoring; Analysis; Assessments; Resource inventory; Wildlife (or Fauna); Fish; Willamette River Decadal Assessment; freshwater fish; fish surveys; electroshocking; population assessment; Oregon; western Oregon; Willamette River
Geographic Coverage:  View help for Geographic Coverage Oregon
Time Period(s):  View help for Time Period(s) 6/27/2011 – 10/1/2023
Data Type(s):  View help for Data Type(s) observational data
Collection Notes:  View help for Collection Notes DOI: https://doi.org/10.2737/RDS-2024-0057 Authors: Penaluna, Brooke E. ; Gregory, Stanley V. ; Wildman, Randall ; Giannico, Guillermo R. ; Pollock, Amanda M. Publication year: 2025 (Downloaded 2026-05-30)


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V1 [2026-05-31]

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