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    • Fall transport - A study to compare smolt-to-adult return rates (SARs) of Snake River fall Chinook salmon under alternative transport and dam operational strategies

    Metadata Updated: October 18, 2025

    This U.S. Army Corps of Engineers (USACE)-funded study that began in 2005 compares the SARs of PIT tagged juvenile hatchery Snake River fall Chinook that are split into two groups, released above Lower Granite Dam, and when detected at downstream dams, one group is transported (if detected) and the other group bypassed if detected. When adult returns are complete, their SARs will be compared to determine the efficacy of smolt transport of this stock. Scales are collected on returning adults to determine age at ocean entry. The study is a collaborative effort with the U.S. Fish and Wildlife Service (USFWS), Washington Dept. of Fish and Wildlife (WDFW), and the Nez Perce Tribe (NPT). Juvenile releases began in 2005, and will be completed in 2012. Adult returns will be completed in 2016, with a final report provided to the USACE and region summarizing study results.

    Fall Chinook transport study data.

    Access & Use Information

    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.

    Downloads & Resources

    Dates

    Metadata Date October 7, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date October 18, 2025
    Reference Date(s) (publication)
    Frequency Of Update

    Metadata Source

    Harvested from NMFS NWFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 7, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date October 18, 2025
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:20555
    Access Constraints Cite As: Northwest Fisheries Science Center, [Date of Access]: Fall transport - A study to compare smolt-to-adult return rates (SARs) of Snake River fall Chinook salmon under alternative transport and dam operational strategies [Data Date Range], https://www.fisheries.noaa.gov/inport/item/20555., Access Constraints: NA
    Bbox East Long -117.4231
    Bbox North Lat 46.67
    Bbox South Lat 46.66
    Bbox West Long -117.4331
    Coupled Resource
    Frequency Of Update
    Harvest Object Id f48fc932-846f-446b-af37-3a85b07a0a66
    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.
    Lineage Data is automatically error-checked against established standards.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-117.4331, 46.66], [-117.4231, 46.66], [-117.4231, 46.67], [-117.4331, 46.67], [-117.4331, 46.66]]]}
    Progress underDevelopment
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2005-01-01
    Temporal Extent End 2016-12-31

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