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Interrogation Site Metadata

ZEN - Secesh River at Zena Cr. Ranch

Status:   Active - Operations Unspecified
Site Type: Instream Remote Detection System  |  Organization: Biomark
General Operational Period: Year Round
Start Date: 3/12/2009 12:00 PM

This is an in-stream interrogation system consisting of two separate antenna arrays, 130 meters apart, near the Zena Creek Ranch. The upstream and downstream arrays consist of four flat plate antennas each, spanning 24 meters (80 ft.) across the low-water channel.

Current Operations

Last File Loaded: ZEN-2022-176-P-00G.xml
Date Last File Loaded: 6/25/2022 4:50 PM
Date Last File Opened: 6/25/2022 11:58 AM
Date Last File Closed: 6/25/2022 3:31 PM
Last Observation Tag: 3D9.239F87276F
Last Observation Date: 6/23/2022 9:09 PM
Detection Summary: Last Day's Observations


Primary Contact:

Kyle Meier

Data Steward:

Brett Turley


Coordinates: 45.033300, -115.733020  |  River Km: 522.303.215.059.003

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 B0 mux down from May 8-14.
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
2010 1/1/2010 12:00 AM 1/1/2011 12:00 AM
2009 3/12/2009 12:00 PM 1/1/2010 12:00 AM First year of operation. The ZEN (A0 - upstream and B0 - downstream) arrays were installed the week of March 9, 2009. Each array consists of four 20-ft. Biomark pass-by antennas. Monitoring at both arrays began at approximately noon on March 12, 2009.


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.

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Start Date:  4/12/2012
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
9/28/2021 12:00:00 AM General

ZEN B0 antenna B1 was replaced with a Biomark 20 ft. PVC antenna on September 28, 2021 due to a loss in antenna current on November 28, 2020.  ZEN A0 and ZEN B0 are operating continuously without disruption through November 2, 2021.

11/25/2019 10:08:47 AM General Sites ZEN A0 and ZEN B0 have been operating continuously without disruption through November 25, 2019.
11/30/2017 8:26:21 AM General ZENA0 array had the non-functional Global Star satellite modem replaced with a Hughs Net modem on March 23, 2017. A set of batteries was replaced on August 1, 2017 and the other set of batteries replaced on August 4, 2017. ZENB0 required no maintenance in 2017. ZENA0 and ZENB0 arrays have run continuously without disruption through November 30, 2017.
11/16/2016 9:08:00 AM General ZEN A0 satellite modem seized to function on 8/14/16. ISEMP personnel have made site visits to download data. ZEN A0 and ZEN B0 have operated without disruption through 11/16/16.
10/23/2013 9:48:51 AM General The site ZEN A0 has been running continuously without disruption through 10/23/13. No new maintenance was performed. The site ZEN B0 MUX transceiver system froze up on 5/8/13 resulting in a data collecting disruption through 5/14/13 when repairs were made. The site has been running continuously through 10/23/13.

Archived Event Logs