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Interrogation Site Metadata

NBA - Nursery Bridge Adult

Status:   Active - Operational
Site Type: Instream Remote Detection System  |  Organization: Confed. Tribes of the Umatilla Indian Reser.
General Operational Period: Year Round
Start Date: 10/3/2003 10:00 AM

Nursery Bridge Dam Fishways (both), Walla Walla River at Milton-Freewater, OR.

Current Operations

Last File Loaded: NBA-2022-177-P-00B.xml
Date Last File Loaded: 6/26/2022 5:41 AM
Date Last File Opened: 6/26/2022 1:12 AM
Date Last File Closed: 6/26/2022 4:13 AM
Last Observation Tag: 3DD.003D36C9D9
Last Observation Date: 6/6/2022 10:16 AM
Detection Summary: Last Day's Observations


Primary Contact:

Robert Hogg

Data Steward:

Travis Olsen


Coordinates: 45.945399, -118.384451  |  River Km: 509.072

Operational History

Operational history describes the period the site was interrogating for PIT tags. The comments provide anecdotal information about the operation of the site during this period. Site operational periods are updated typically at the end of the calendar year.

Year Start Date End Date Comments
2021 1/1/2021 12:00 AM 1/1/2022 12:00 AM Start and end dates based on timer tags.
2020 1/1/2020 12:00 AM 1/1/2021 12:00 AM Start and end dates based on timer tags. See event logs for additional operational information.
2019 1/1/2019 12:00 AM 12/31/2019 12:00 AM Start and end dates based on timer tags.
2018 1/1/2018 12:00 AM 1/1/2019 12:00 AM Start and end dates based on timer tags.
2017 1/1/2017 12:00 AM 1/1/2018 12:00 AM Start and end dates based on timer tags.
2016 1/1/2016 12:00 AM 1/1/2017 12:00 AM Start and end dates based on timer tags.
2015 1/1/2015 12:00 AM 1/1/2016 12:00 AM
2014 1/1/2014 12:00 AM 1/1/2015 12:00 AM
2013 1/1/2013 12:00 AM 1/1/2014 12:00 AM
2012 1/1/2012 12:00 AM 1/1/2013 12:00 AM
2011 1/1/2011 12:00 AM 1/1/2012 12:00 AM West Ladder (coil B1) was down from June 23-September 26.
2010 1/1/2010 12:00 AM 1/1/2011 12:00 AM
2009 1/1/2009 12:00 AM 1/1/2010 12:00 AM On June 29, a berm was created to divert all summer flow away from the West ladder and into the East ladder; these is no spill at antennae #3 - #5. Antenna #2 in the East Side ladder was discovered to be vandalized on July 16; the site was shut down from July 16 until antennas #1 and #2 were repaired and reinstalled on July 27. The East Ladder (antennae #1 and #2) was shut down for maintenance between August 14-24. A power surge shut down both the computer and MUX between midnight on Nov. 28 and 10:34 on Nov. 30; no data are available during this interval.
2008 1/1/2008 12:00 AM 1/1/2009 12:00 AM No data were collected between Feb. 3 and Mar. 12 due to a CPU board malfunction. There was a power outage between 1PM on May 7 and the morning of May 12.
2007 1/1/2007 12:00 AM 1/1/2008 12:00 AM No data were collected between Nov. 30 and Dec. 10 due to an equipment failure.
2006 1/1/2006 12:00 AM 1/1/2007 12:00 AM The new (East) ladder is the primary passage route at this site. The old (West) ladder was watered-up on January 3; the PIT tag antenna at this ladder was not re-activated at that time. It was replaced, and re-activated, on March 6. The old (West) ladder antenna was shut off during a June 27 site inspection because the left (West) bank channel was dry. A second antenna was installed in the new (East) ladder below the existing antenna on July 19. The old (West) ladder antenna was re-installed and re-activated on December 12.
2005 1/1/2005 12:00 AM 1/1/2006 12:00 AM The old (West) ladder was dewatered, and the PIT tag antenna de-activated, on June 24, 2005.
2004 1/1/2004 12:00 AM 1/1/2005 12:00 AM In addition to the existing coil (01) originally installed in the right bank fishway, a second coil (B1) was installed in the left bank fishway on May 17, 2004. Due to an equipment failure, there are no data available for coil #01 at NBA between 12:00 on 8/2/04 and 21:00 on 8/8/04.
2003 10/3/2003 10:00 AM 1/1/2004 12:00 AM The start date was derived from the first available interrogation file.


Configuration metadata includes details about the equipment used at the site to detect and record PIT tags. A new configuration sequence record is created when equipment is added or removed from the site and the period of time it was active. A configuration sequence without an End Date is currently active.

Select Configuration Number:
Start Date:  4/17/2014
End Date:  ----

Equipment History

Select a type to view the history of equipment installed at this site. A missing End Date implies the information about the equipment is current.

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Equipment Code Description Start Date End Date


Event Log Summary

Event Date Event Type Comments
3/10/2021 10:00:00 AM General I updated the reader time on the east side mux reader. I manually resubmitted file NBA21069.00A.
2/12/2020 2:00:00 PM SiteUp Site was powered back up on 2/12/2020 at approximately 2:00 PM. Site was down for approximately 5 days and 10 hours due to flooding.
2/7/2020 5:00:00 AM SiteDown Site went down due to flooding on 2/7 at approximately 5:00 AM
2/25/2019 10:06:25 AM General I updated the clock on the east ladder mux and resubmitted file NBA19056.00A
5/31/2018 9:45:00 AM General West ladder was dewatered on 5/31 and reader was shut off. It is scheduled to be watered back up this fall.
2/1/2018 1:31:48 PM General I reset the time on both readers
9/21/2016 9:39:26 AM General NBA west ladder IS-10001 firmware was updated to 1.6.1.
4/27/2016 2:08:00 PM General A new enclosure, cap board and cable were installed at NBA west ladder on 4/27/16. Detection at that ladder is back up.
4/20/2016 7:31:41 AM General Over last weekend, vandals destroyed the enclosure that held the capacitor board and destroyed the cap board for the west ladder antenna. So, as of now there is no interrogation on the west ladder. We are working to get a new enclosure and cap board installed. The east side ladder is working fine.
3/10/2015 7:20:23 AM General The mux at NBA east has a dead lithium battery and lost it's settings. The mux was not flashed with the correct ID causing some data files to be rejected. I reset the ID remotely. The battery needs to be swapped out and the mux reflashed.
12/31/2013 3:58:00 PM General East ladder - All data for 2013 is uploaded in PTAGIS.
12/31/2013 1:40:00 PM General West Ladder - Computer was off from 9/13 to 10/26., 12/17 to 12/31, so there are no interrogation files. Buffer was checked and there were no detections. All 2013 data has been loaded in PTAGIS.