John Day Dam

Click to see full size photo

Location: River Mile 215.6 on the Columbia River in HUC 17060105
Operated by: United States Army Corp of Engineers, Portland District
Link: https://www.nwp.usace.army.mil/op/d/johnday.asp

2016 Smolt Monitoring

Dates: April 1 to September 15
Sampling conducted by: Pacific States Marine Fisheries Commission.
Project Leader: Rick Martinson
Site Biologists:Greg Kovalchuk, Dean Ballinger

More information can be found at the John Day/Bonneville Smolt Monitoring Web Page

Passage index formula

1999 to present:   (collection count)/((average(COE turbine discharge/(COE turbine discharge + total spill))))
1998:   (collection count)/((average(COE turbine discharge/(COE turbine discharge + COE total spill))))
1997 to 1987: (collection count)/((average(UNIT 3 flow/(COE turbine discharge + total spill))))  
1986:   (collection count)/((average(UNIT 3 flow/(COE turbine discharge + UNIT 3 + total spill)))) 
1985:   (collection count)/((average(UNIT 3 flow/(river flow + total spill))))  

Traditional Adult Return Reporting Dates

April 1 to October 31


Page last updated on: January 29, 2016

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