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    • Seasonal transport - A study to determine the seasonal effects of transporting fish from the Snake River to optimize a transportation strategy

    Metadata Updated: May 24, 2025

    The goal of this U.S. Army Corps of Engineers (USACE) - funded study that began in 2004 is to determine if the smolt-to-adult return rates (SARs), transport/in-river ratio, and differential post-hydropower system mortality of transported and in-river Chinook salmon and steelhead are related to their size and time of ocean entry. Juvenile spring/summer Chinook and steelhead are PIT-tagged each week of the migration at Lower Granite Dam, and either barged or returned to the river to migrate. A portion of the in-river migrants are collected at Bonneville Dam and re-measured to calculate growth during migration. When adult returns are complete, SARs and Transport Benefit ratios will be calculated and correlated with biological and physical conditions in the river, plume, and ocean environment. This information can then be used to make management decisions on when to release fish from hatcheries, and whether to transport smolts or leave them in the river to optimize SARs. Annual reports of project progress and a final report will be provided to the USACE upon project completion.

    Seasonal transport 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.

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    Dates

    Metadata Date May 15, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date May 24, 2025
    Reference Date(s) (publication)
    Frequency Of Update

    Metadata Source

    Harvested from NMFS NWFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 15, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date May 24, 2025
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:20563
    Access Constraints Cite As: Northwest Fisheries Science Center, [Date of Access]: Seasonal transport - A study to determine the seasonal effects of transporting fish from the Snake River to optimize a transportation strategy [Data Date Range], https://www.fisheries.noaa.gov/inport/item/20563., 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 ceb13b11-f83d-432d-b374-e9210e24f6d4
    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 2004-01-01
    Temporal Extent End 2016-12-31

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