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Interrogation Site Metadata

NAL - Lower Nason Creek

Status:   Active - Non-Operational
Site Type: Instream Remote Detection System  |  Organization: Washington Dept. of Fish and Wildlife
General Operational Period: Year Round
Start Date: 4/17/2008 12:00 AM

This is a permanent instream PIT tag interrogation site at rkm 1 located on lower Nason Creek. The site consists of two rows of antennas, with each row spanning the wetted width of the channel during base flows. Upstream row consists of 1 20-foot, 1 15-foot and 1 10-foot PVC antenna. The downstream row consists of 1 10-foot and 2 20-foot PVC antennas. All antennas are installed in flat-plate configuration. The FS1001M transceiver is powered by grid. The antennas were built and installed by WDFW. A cellular modem is installed on site to provide remote communication and allow for automated data collection. A submersible pressure transducer and temperature probes are installed on site to monitor environmental conditions.

Current Operations

Last File Loaded: NAL-2022-176-P-00F.xml
Date Last File Loaded: 6/26/2022 3:41 AM
Date Last File Opened: 6/25/2022 7:11 PM
Date Last File Closed: 6/26/2022 1:11 AM
Last Observation Tag: 3DD.0077D2B027
Last Observation Date: 6/25/2022 11:44 PM
Detection Summary: Last Day's Observations


Primary Contact:

Jay Deason
509-664-3148 x22

Data Steward:

Brett Turley


Coordinates: 47.802494, -120.713574  |  River Km: 754.089.001

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 11/14/2021 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 4/1/2016 12:00 AM 1/1/2017 12:00 AM Start and end dates based on timer tags.
2015 1/1/2015 12:00 AM 11/17/2015 12:00 AM
2014 3/6/2014 12:00 AM 1/1/2015 12:00 AM Site down July 20-25.
2013 1/1/2013 12:00 AM 11/14/2013 12:00 AM No interruptions in operations until site shut down for winter on November 14.
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 NAL was out of operation from Jan 31 - Feb 15 due to severe environmental conditions. WDFW assumed responsibility for NAL on 15Feb11.
2010 1/1/2010 12:00 AM 1/1/2011 12:00 AM No data available between June 8-11 due to loss of power.
2009 1/1/2009 12:00 AM 1/1/2010 12:00 AM Large ice flow damaged arrays on 1/07/09; there are no detection data available between 1/7/09 and 3/3/09. There are no detection data available between 3/15/09 and 3/26/09. Extremely high stream discharge damaged arrays on 5/27/09; there are no detection data available between 5/27/09 and 7/6/09.
2008 4/17/2008 12:00 AM 1/1/2009 12:00 AM First year of operation for Lower Nason Creek array.


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:  4/1/2008
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

No Photos

Event Log Summary

Event Date Event Type Comments
5/9/2022 11:25:00 AM SiteDown

Battery bank failed at site on 9 May. Batteries were replaced and site restarted on 20 May.

5/4/2022 12:00:00 AM SiteUp

Interrogation site NAL main power supply was restored on 05/04/2022. 

3/24/2022 12:00:00 AM SiteDown

Interrogation site NAL lost power on 11/13/2021. Grid power was shut off by PUD. Site was brought back online on 03/24/2022. Temporary battery swaps are being used to keep site running until grid power gets restored to site. Also on 03/24, Antenna #4 was plugged back in and secured.

11/13/2021 12:00:00 PM SiteDown

Campground cut power to site and it is no longer running until power can be re-established. USFS has been contacted.

6/28/2021 9:00:00 AM SiteDown

The Lower Nason Creek array lost power from 6-28-21 to 7-6-21. A site visit and troubleshooting attempt was made. Site ran until 7-7-21 then lost power again. Both banks of batteries had been damaged by extreme regional heat wave. Batteries were removed and a new bank was installed on 7-14-21 and the site is now performing well all antennas working at low noise.

7/22/2019 1:00:00 PM General Antenna 3 was plugged back in all antennas working.
7/19/2018 1:00:00 PM General At interrogations site NAL on 7/19/2018 at approximately 1:00 PM, Antennas #2 and #3 were brought back online. Broken antennas were replaced with HDPE antennas. All antennas at this site are functioning. Site is fully operational.
2/28/2018 1:00:00 PM General At interrogation site NAL on 2/28/2018 at approximately 1:00 PM, Antenna #1 was brought back online. Antenna #1 was damaged and had water inside, it was replaced with a 20 ft HDPE antenna. All antennas at this site are functioning and site it is fully operational.
7/26/2016 11:00:00 AM General At interrogation site NAL on 7/26/2016 at approximately 11:00 AM, Antenna #6 was replaced. A coax cable was changed on Antenna #1 to reduce excessive noise , and a dropped to tag was removed from antenna #2. All antennas are working and site is fully operational.
4/9/2016 10:47:00 AM General At interrogation site NAL, Antenna #6 lost current on 4/92016 at 10:47 AM, and is no longer operational.
11/20/2015 9:21:04 AM SiteDown Interrogation site NAL was flooded and the FS1001M was damaged on 11/17/15 at 21:32:05
6/2/2015 3:33:47 PM General All of the antennas were restrapped at the Lower Nason creek interrogation site.
7/25/2014 1:07:06 PM SiteUp Power was restored to interrogation site NAL on 7/25/14 at approximately 09:30.
7/22/2014 8:43:29 AM SiteDown The grid power at the site NAL is down currently. Tags were recorded up until approximately 10pm on 7/20/2014.
3/6/2014 12:30:00 PM SiteUp NAL powered up. Gird power is still out, batteries are being swapped out in order to operate the site until grid power can be restored.
12/31/2013 8:00:00 AM General NAL operated without interruption in 2013 until 11/14/13 when the site shutdown. Grid power at the site was lost and has yet to be restored as of 2/26/14.
12/13/2013 3:19:43 PM General At the interrogation site NAL grid power was lost for the site on 11-14-13 at 14:13. Site will be down until further notice due to wintertime conditions.

Archived Event Logs