Chena River Chinook Salmon Escapement – Phase 5

Salmonid Research, Monitoring, and Evaluation (RM&E)

Project IDAK52011
Recovery Domains -
Start Date06/01/2019
End Date11/30/2021
Last Edited04/20/2022
1 - 1


From 2019 through 2021, this project estimated Chinook and chum salmon by visually counting fish as they pass over a continuous band of white fabric panels strung across the river bottom on the upstream side of the Moose Creek Dam. A DIDSON sonar unit and an ARIS sonar unit were also deployed upstream of the tower site on both sides of the river to insonify the river at all times and record the number of migrating salmon throughout the run. A mixture model was used when necessary to estimate Chinook and chum salmon during extended periods of high water when tower counts cannot be completed. In addition to enumeration, carcasses of spawned-out Chinook and chum salmon were collected during the last week of July through the first two weeks of August to estimate the age, sex, and length (ASL) composition of the escapement.

Project Benefit    

Escapement monitoring provides the foundation for salmon management in Alaska and this project will provide three additional annual estimates of Chinook salmon escapement and composition for one of the largest spawning systems in the Yukon River drainage. Chinook salmon bound for the Chena River to spawn will be harvested by subsistence users from Alakanuk to Tanana within the mainstem Yukon River and from Tanana to Nenana on the Tanana River tributary. This project will provide inseason information regarding run strength that can be used to make management decisions regarding subsistence harvest opportunities. Furthermore, a continuous series of escapement estimates such as these are critical for evaluating the efficacy of management systems throughout the Yukon River drainage and for refining escapement goals by examining Chinook salmon productivity associated with different levels of escapement and environmental conditions.


Metric Completed Originally
Research and Monitoring
  Stream Miles Monitored 46.51

Funding Details

Report Total:$434,536

Project Map



  • Worksite Identifier: 46115421
  • Start Date:
  • End Date:
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Tanana River
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Alaska
  • Recovery Domain:
  • Latitude: 64.792695
  • Longitude: -147.179635


  • Un-Named ESU Chinook
  • Un-Named ESU Chum




  • E.0 Salmonid Research, Monitoring, and Evaluation (RM&E)Y (Y/N)
    •      . . E.0.a RM&E Funding 434,536.00
    •      . . E.0.b
      Complement habitat restoration project
    •      . . E.0.c
      Project identified in a plan or watershed assessment.
    •      . . E.0.d.1 Number of Cooperating Organizations 0
    •      . . E.0.d.2
      Name Of Cooperating Organizations.
    •      . . E.0.e.1 Number of reports prepared 1
    •      . . E.0.e.2
      Name Of Report
      Matter, A. N. and M. Parrott. 2022. Chinook salmon escapement in the Chena and Salcha Rivers and coho salmon escapement in the Delta Clearwater River, 2021. Alaska Department of Fish and Game, Fishery Data Series No. 21-XX, Anchorage.
    •      . . E.1 MonitoringY (Y/N)
      •      . . . . E.1.a Monitoring funding 434,536.00
      •      . . . . E.1.b.1 Stream Miles Monitored 46.51
      •      . . . . E.1.b.2 Acres of Watershed Area Monitored .0
      •      . . . . E.1.c.1 Adult salmonid population monitoringY (Y/N)
        •      . . . . . . E.1.c.1.a # miles (to nearest 0.01 mile) monitored for adult salmonids 46.51
        •      . . . . E.1.d
          Name Of Comprehensive Monitoring Strategy/Program