The Fish Passage Center (FPC) coordinates the Smolt Monitoring Program (SMP) and the Gas Bubble Trauma Monitoring Program (GBT). Data from these programs are intended to provide the information basis for federal, state, and tribal recommendations for anadromous fish passage in the Federal Columbia River Hydro-electric System (FCRPS). For a list of SMP sites and the current year smolt monitoring schedule at these sites see list below.

Find what you want fast:

  • FPC Daily Smolt Reports - The Fish Passage Center publishes daily smolt reports with include a Passage Index Report, Catch Report, Sampling Comments, and a Transportation Summary Report.

  • Smolt Migration Timing for the Runs at Large - Tabular data includes real-time passage index, collection count, sample count, mortalities and descaling. Graphs include real-time passage index versus river flow.
  • Smolt Passage Data for PIT Tagged Smolt Groups - Each day PIT tag data is accumulated and summarized. PIT tag data accumulations for partial days are not posted to the FPC web site, to avoid creating graphs with misleading data.

  • Smolt Mortality Data - Four types of smolt mortality queries are available including: (1) Facility mortalities; (2) Sample mortalities; (3) Total Project Mortalities; and (4) Transportation mortalities.
  • Smolt Transportation Data - Available on smolt transportation includes the Transportation Summary Report, current and historic smolt transportation data queried by year, site, and species, and transportation mortaility data.
  • Smolt Survival Data - This section allows the user to query for smolt survival estimates by river reach.

  • Gas Bubble Trauma - This section provides access to gas bubble trauma reports and queries including: a Gas Bubble Trauma (GBT) Summary, a GBT Summary Report by Species, historic GBT data queries, the GBT Data Entry Program, and the GBT Monitoring Protocol Manual.
  • Miscellaneous Smolt Data - This section provides access to miscellaneous smolt data including yearly SMP Site Reports.

Information about the SMP program

The SMP program provides a consistent, long term database for short term in-season fish passage management and for long term mitigation decisions. FPC staff provides daily oversight and technical support for remote sites implementing the SMP. Final data and analysis of the SMP data are reported in the Fish Passage Center Annual Report. Queries in this website allow users to access the data gathered by the SMP program. SMP data collection begins in spring and ends in fall of the current year. For a list of SMP sites and the 2014 smolt monitoring schedule at these sites see list below. Smolt data for the current sample ending date is posted by 10:00am, and periodically updated throughout the day.

Information about GBT Sites

GBT program sites in the mid Columbia, lower Columbia, and Snake River monitor smolts for gas bubble trauma. The data collected from the monitoring sites are reported in the FPC Annual Report and are available through queries on this website.

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    2020 Smolt Monitoring Schedule    

Dam Monitoring Dates Trap Monitoring Dates
Bonneville PH2 Dam - BO2 March 5 to October 31 Lewiston Trap - LEW March 3 to May 31
John Day Dam - JDA April 1 to September 15 Whitebird Trap - WTB March 3 to May 31
McNary Dam - MCN April 1 to October 1 Grande Ronde Trap - GRN March 5 to May 31
Rock Island Dam - RIS April 1 to August 31 Imnaha Trap - IMN March 5 to May 31
Lower Monumental Dam - LMN April 1 to October 1    
Little Goose Dam - LGS April 1 to October 31    
Lower Granite Dam - LGR March 26 to October 31    








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Page last updated on: May 8, 2020

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