Salmon habitat use, tidal-fluvial estuary - Columbia River Estuary Tidal Habitats

Metadata Updated: April 21, 2022

The goal of the tidal-fluvial estuary study is to determine the estuary's contribution to the spatial structure and life history diversity of Columbia River salmon stocks and the implications for estuary restoration. The study targets salmon use of tidal-fresh habitats in the estuary from Rkm 75 to Bonneville Dam, and addresses four primary objectives:

  1. Characterize the temporal and spatial distribution of Chinook salmon genetic stock groups throughout the estuary (March 2010 - March 2012).

  2. Determine stock-specific habitat use, life histories, and performance of juvenile salmon in key habitat complexes to fill data gaps in the tidal fluvial reaches of the estuary (2012-2016).

  3. Monitor juvenile salmon life histories and their contributions to adult returns in selected estuary tributaries, including tributary examples where tidal habitats have been restored (2012-2018).

  4. Evaluate estuary restoration needs for recovery of all salmon ESUs and account for projected effects of climate change through application of a salmon life-cycle model (2011-1015).

The study, funded by the U.S. Army Corps of Engineers, involves a large team of researchers organized by NOAA Fisheries, including researchers from the Oregon Health and Sciences University, University of Washington, and Washington Department of Fish and Wildlife. The study addresses critical uncertainties identified in the research, monitoring, and evaluation (RME) program for the Federal Columbia River Estuary Program (FCREP). The Estuary Program is intended to conserve and restore the estuary ecosystem to improve the performance of listed salmonid populations. Products from the tidal-fluvial study will include:

  1. Descriptions of stock-specific temporal and spatial distributions of Chinook salmon throughout the estuary.

  2. Estimates of variations in Chinook salmon stock composition and stock-specific growth, food habits, consumption rates, and bioenergetic efficiencies within selected tidal-fluvial habitats.

  3. Estimated contributions of estuarine life histories among returning adult Chinook salmon from selected populations throughout the Columbia River Basin.

  4. A hydrological model quantifying the dynamics of rearing habitat opportunities for juvenile salmon at estuary reach and habitat scales.

  5. Improved life-cycle models to account for the estuarine life histories of juvenile salmon and estimating the potential effectiveness of estuary restoration actions on the recovery and viability of selected salmon stocks. These results will directly address information needs to support estuary actions specified in the Federal Columbia River Power System (FCRPS) Biological Opinion for the Columbia River. The tidal-fluvial estuary study is part of an ongoing estuary research program initiated in 2002. The current study expands upon earlier research conducted in the lower 100 km of the estuary from 2002 to 2008. Although all objectives will be addressed by 2018 to correspond with a review of progress implementing the FCRPS Biological Opinion, some sampling activities may extend beyond this date to allow brood-year reconstruction of estuary contributions to adult returns in selected streams (Objective 3). Monthly fish species composition, abundance, and length:weight; Chinook salmon life history and genetic stock ID.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date March 29, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date April 21, 2022
Reference Date(s) January 1, 2012 (creation), (publication)
Frequency Of Update

Additional Metadata

Resource Type Dataset
Metadata Date March 29, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date April 21, 2022
Reference Date(s) January 1, 2012 (creation), (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:17980
Access Constraints Cite As: Northwest Fisheries Science Center, [Date of Access]: Salmon habitat use, tidal-fluvial estuary - Columbia River Estuary Tidal Habitats [Data Date Range],, Access Constraints: N/A |
Bbox East Long -123.9374
Bbox North Lat 46.2095
Bbox South Lat 46.1995
Bbox West Long -123.9474
Coupled Resource
Frequency Of Update
Harvest Object Id ba74c72f-23ad-4b3a-a307-7c811198b5cd
Harvest Source Id ba43549f-8268-499d-bec8-91b164cb168f
Harvest Source Title NMFS NWFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-123.9474, 46.1995], [-123.9374, 46.1995], [-123.9374, 46.2095], [-123.9474, 46.2095], [-123.9474, 46.1995]]]}
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2010-03-31
Temporal Extent End 2018-09-30

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