Site Type

Site Name


ROZ - Roza Diversion Dam (Combined)

Originally referred to the Roza Dam Smolt Bypass operated by NMFS in 1992. Since March, 2011, the site consists of two 5-ft flat plate antennas within one of the two 100-ft roller-gate spillbays, and incorporates the three antennas in the fishway previously reported under the RZF site ID.

Operated by:


First year:


Last year:




Site Contacts


Nicole Tancreto
(503) 595-3100


Don Warf
(509) 735-2773


Photo Gallery

Operational Dates

Year Start Date End Date Notes
2014 1/1/2014 1/1/2015
2016 1/8/2016 1/1/2017
2015 1/1/2015 12/31/2015
2017 1/1/2017 1/1/2018
1992 3/26/1992 5/29/1992 The Start_date and End_date values reflect the first and last dates of detection, respectively. The actual interval of operational dates is not known.
2011 3/16/2011 1/1/2012 First year of operation since 1992. The current configuration consists of the three fishway antennas previvously reported as RZF, and two new five-ft flat-plate antennas deployed in parallel on the West spillway roller gate. In 2011, spill at the West roller gate is normally confined to the 10-ft section over the flat-plates. Water flowed across the full 100-ft width of the West roller gate from March 30 - April 12.
2012 1/1/2012 1/1/2013 A three hour power outage occurred on May 29. Power outage caused interruptions in operations from late June 19 until early June 20 (20:58-07:00 PST). The adult fish ladder was dewatered on November 7.
2013 1/1/2013 1/1/2014
2018 1/1/2018

Current and Historic Site Configurations

Config Seq: 110

Start Date: 3/16/2011

End Date:

Config Seq: 100

Start Date: 3/26/1992

End Date: 5/31/1992

Event Logs