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Interrogation Site Metadata

SFG - SF Salmon at Guard Station Br.

Status:   Active - Operational
Site Type: Instream Remote Detection System  |  Organization: Biomark
General Operational Period: Year Round
Start Date: 9/29/2009 12:00 PM

This is an in-stream interrogation system located at rkm 30 near the lower South Fork Salmon River Guard Station on the South Fork Salmon River. It consists of six flat plate antennas, spanning 36 meters across the low-water channel.

Current Operations

Last File Loaded: SFG-2021-356-P-00B.xml
Date Last File Loaded: 12/22/2021 3:00 PM
Date Last File Opened: 12/22/2021 10:46 AM
Date Last File Closed: 12/22/2021 12:37 PM
Last Observation Tag: 3D9.239F85C160
Last Observation Date: 12/22/2021 12:37 PM
Detection Summary: Last Day's Observations


Primary Contact:

Kyle Meier

Data Steward:

Brett Turley


Coordinates: 45.175659, -115.579712  |  River Km: 522.303.215.030

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 12/23/2021 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 1/24/2017 12:00 AM 1/1/2018 12:00 AM Start and end dates based on timer tags.
2016 1/1/2016 12:00 AM 12/31/2016 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 Data from October 17-22 lost due to communication error.
2010 1/1/2010 12:00 AM 1/1/2011 12:00 AM
2009 9/29/2009 12:00 PM 1/1/2010 12:00 AM First year of operation. Due to problems with the MUX board, the site was operational for only 100 minutes between Oct. 11 13:04 and Oct. 16 10:37.


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:  3/1/2009
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
11/2/2021 12:00:00 AM General

SFG is operating continuously without disruption through 11/02/2021.  

9/16/2020 2:06:00 PM General South Fork Guard Station PIT array (SFG) MUX transceiver stopped functioning February 3, 2020 due to a faulty CPU board inside the MUX. The result was a loss of data collection until June 15, 2020 when the CPU board was replaced. SFG site is not accessible during winter because of deep snow. Antenna A4 stopped functioning in early February and was replaced with a Biomark PVC antenna on September 16, 2020. The site is running continuously without disruption through September 21, 2020.
10/17/2019 8:40:00 AM General SFG antenna A3 started losing current on 11/12/18 and continued to operate at 1.0 Amps. A3 was replaced on 10/17/19 with a 20 ft. Biomark antenna. SFG is running continuously without disruption through October 21, 2019.
8/12/2017 8:04:00 AM General South Fork Salmon (SFG) antenna A5 lost current during 2017 spring run off because the antenna cable was pulled out of the antenna. The cable was plugged back in and armored with large substrate. A5 is now operating. Antenna A2 also lost current due to a leak inside the antenna and was replaced with a new 20 ft. PVC antenna. SFG has run continuously without disruption through 8/15/17.
9/26/2016 8:37:00 AM General SFG Antenna A5 lost current 1/29/16. A5 was replaced with a 20 ft. Biomark antenna on 9/26/16. SFG has been operating without disruption through 11/2/16.
9/23/2014 11:45:00 AM General South Fork Salmon Guard station (SFG) is functioning and operational without disruption through 9/23/14
8/14/2014 11:45:00 AM SiteUp South Fork Salmon Guard station (SFG) antenna 1 (A1) began losing current 11/7/2013.  A1 never ceased to function, although read range integrity was reduced.  A1 was replaced with a 20 ft. Biomark lite style of antenna.  Batteries charged by solar were also replaced. Repairs were made to onshore equipment that was destroyed by the fallen tree.
8/12/2014 11:45:00 AM SiteDown South Fork Salmon Guard station (SFG) site went down due to a tree falling on top of all electrical equipment onshore.  
10/23/2013 9:48:51 AM General The site has been running continuously without disruption through 10/23/13. No new maintenance was performed.

Archived Event Logs