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Interrogation Site Metadata

IR2 - Lower Imnaha River ISA @ km 10

Status:   Active - Operational
Site Type: Instream Remote Detection System  |  Organization: Biomark
General Operational Period: Year Round
Start Date: 11/13/2010 12:00 AM

In-stream detection system consisting of a single array located in the lower Imnaha River. The array (IR2) located at river km 10 (N 45.742839 W -116.764563) consists of one 10 foot and four 20 foot Biomark flat panel antennas that span the entire river at base flow. IR2 is operated by the Integrated Status and Effectiveness Project (ISEMP) cooperators Nez Perce Tribe and Quantitative Consultants, Inc. and was installed for continuous monitoring in November 2010. The array includes ISEMP standard site monitoring equipment including: air and water temperature probes, and a water pressure transducer to monitor stream level. Electrical power is provided by a solar/propane hybrid thermal electric generator and remote communication provided by a satellite modem.

Current Operations

Last File Loaded: IR2-2023-148-P-006.json
Date Last File Loaded: 5/29/2023 2:05 AM
Date Last File Opened: 5/28/2023 7:20 PM
Date Last File Closed: 5/28/2023 10:20 PM
Last Observation Tag: 3DD.003D422769
Last Observation Date: 5/28/2023 7:16 PM
Detection Summary: Last Day's Observations


Primary Contact:

Kyle Meier

Data Steward:

Brett Turley


Coordinates: 45.742702, -116.764304  |  River Km: 522.308.010

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
2022 1/1/2022 12:00 AM 1/1/2023 12:00 AM Start and end dates based on timer tags.
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 High noise levels from January 31 - March 10 resulted in sporadic downtime.
2010 11/13/2010 12:00 AM 1/1/2011 12:00 AM First year of operation.


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:  11/1/2010
End Date:  ----

Site Configuration Diagrams:

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.

Select Equipment Type:
Equipment Code Description Start Date End Date

No Photos

Event Log Summary

Event Date Event Type Comments
11/9/2022 12:00:00 AM General

Antenna A5 lost current October 30, 2022 and was replaced with a Biomark 20 ft. PVC antenna on November 9, 2022.  IR2 is running continuously without disruption through November 10, 2022.

9/21/2022 11:00:00 AM SiteUp

Site electronics enclosure was re-installed September 21, 2022 as the threat of fire at IR2 subsided.  IR2 is operating continuously without disruption again.

9/10/2022 12:00:00 AM SiteDown

Site electronics enclosure was removed due to threat of burning up from the Double Creek Fire.  Site is down indefinitely.

7/27/2022 2:00:00 PM SiteUp

Site is operating continuously without disruption through July 27, 2022.  Minimal maintenance required.

11/2/2021 12:00:00 AM General

IR2 is operating continuously without disruption through November 2, 2021.

3/9/2021 3:54:00 PM General Imnaha River 2 (IR2) Solar batteries were replaced with 6 new 230aH batteries on March 9, 2021. IR2 is operating continuously without disruption through March 30, 2021.
6/17/2020 8:20:00 AM General Satellite SIM Card swapped, site visit. General clean up and maintenance performed. Brush and trees pruned from antenna area. TEG Propane tanks swapped for full.
10/9/2019 4:57:30 PM General IR2 is operating continuously without disruption through October 9, 2019.
11/13/2018 7:16:00 AM General Imnaha River 2 (IR2) had Campbell Scientific data logger replaced with a new data logger designed by Biomark on November 13, 2018. A new HughesNet satellite modem/antenna was also installed. IR1 site air temperature probe was changed out for a compatible model. IR2 is operating continuously without disruption through November 26, 2018.
5/4/2017 7:46:00 AM General The optical isolator between the MUX and data logger was replaced at Imnaha River 2 array (IR2) on May 4, 2017. IR2 has run continuously without disruption through 5/10/17.
10/7/2016 4:28:29 PM General Antenna A2 began losing current on 9/16/16. A2 was replaced on 10/07/16 with a new 20 ft. antenna manufactured by Biomark.
9/7/2016 8:46:00 AM General Antenna A4 began losing current on December 7, 2015 and soon stopped functioning. A4 was replaced with a Biomark 20 ft. PVC antenna.
9/24/2015 1:59:00 PM General Antenna 3 began losing current on 7/20/15 and was replaced on 9/24/15 with a 20 ft. Biomark lite style antenna.
10/2/2014 1:28:00 PM General IR2 had antenna A5 replaced with newer 20 ft. antenna on October 2, 2014.    A5 had been compromised by water leaking inside the antenna.  The site was fully operational at 12:00 10/1/2014.  

Archived Event Logs