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Interrogation Site Metadata

OKC - Okanagan Channel at VDS-3

Status:   Active - Non-Operational
Site Type: Instream Remote Detection System  |  Organization: Okanagan Nation Alliance
General Operational Period: Year Round
Start Date: 11/6/2009 12:00 AM

The OKC site is located in the Okanagan (Canadian spelling) Channel at 310th Avenue/Road 18 upstream from Osoyoos Lake. The river in this section is channelized and Vertical Drop Structures (n=17) are used to control the river gradient. The array is located approximately 130 ft downstream of VDS-3. The river at this location is approximately 80 ft wide, enabling nearly full coverage of the width with four 20-ft antennas. Detection of adult sockeye salmon (Oncorhynchus nerka) is the primary focus of the array. Water depth during the sockeye salmon migration ranges from 10 to 24 inches. Optimal read range of 12-mm TX1411SST PIT tags in pass-by orientation ranges between 18 and 20 inches resulting in high detection efficiency. Four new antennas were added to the site in a second array in March 2017.

Current Operations

Last File Loaded: OKC-2022-176-P-00D.xml
Date Last File Loaded: 6/25/2022 5:30 PM
Date Last File Opened: 6/25/2022 11:54 AM
Date Last File Closed: 6/25/2022 3:54 PM
Last Observation Tag: 3DD.003DF3562D
Last Observation Date: 6/24/2022 7:52 AM
Detection Summary: Last Day's Observations


Primary Contact:

Brett Turley

Data Steward:

Carley Simpson


Coordinates: 49.114113, -119.565753  |  River Km: 858.149

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
2015 1/1/2015 12:00 AM 1/1/2016 12:00 AM Mux replaced with IS1001 master controller and readers August 25.
2014 1/1/2014 12:00 AM 1/1/2015 12:00 AM Site down July 5-7. Tags with 3DD prefix were not recorded prior to October 22.
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
2010 3/18/2010 12:00 AM 1/1/2011 12:00 AM Interrogation activities were suspended from November 19, 2009 through March 18, 2010, and again from March 27 through May 14.
2009 11/6/2009 12:00 AM 11/19/2009 12:00 AM First year of operation. Three antennas cover ~75% of the channel width.


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:  3/16/2017
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
2/9/2022 1:00:00 PM GMC

Site visit to battery storage location (Water Survey of Canada shed). Visually inspected cabling and for potential blown fuses. Voltage tested batteries - all were providing ~13.5V. No obvious issues. Current at Antenna 07 had been continuously dropping for months since the node on Antenna 03 was replaced. The past year, Antenna 03 and 07 had been oppositely dropping current concomitant of one another (ie. when 03 loses current, 07 gains current, then 07 loses current and 03 gains current). Immediately after the site visit, Antenna 07 regained current and has not dropped since. This relationship between 03 and 07 appeared to have seasonal influences, therefore close monitoring will be necessary in 2022. 

11/23/2021 1:00:00 PM GMC

Actions Taken:

  • Removed Node 3 and associated cabling (23), and installed new Node & Cabling (24).
  • Used mask and snorkel, with low flows (6-7 cms)/



  • Node 4 canbus male ground pin is highly corroded, with corrosion increasing on other pins
  • New Node 3 canbus Collar would not seal with Node 2 collar. Installed on Nov 24th and returned Nov 26th to ensure better connection. Ground pin on new node beginning to corrode after 2 days exposed to water. Previous Node 3 pins do not display any signs of corrosion.
  • When powering site back up, Antennas 1, 2 & 3 displayed differences in their connections to MC (ie. Not in Tune, Not Connected, Not in Sequence); although eventually connected.
  • Hours later, Antenna 3 lost current again, as was previously happening.

Staff troubleshot with Biomark, and met with Water Survey of Canada to inquire regarding recent power surges at the WSC Station immediately upstream where the MC Batteries are stored. 


Next Steps:

  • Inspect nodes 7 and 8 for corroded canbus male ground pins. Observed interesting patterns with Node 3 and 7 noise and current over past year, thoughts of power issues related to malfunction of antennas (Althought 7 has been working this summer).
  • Issue: Downstream antenna receivers are encapsulated in concrete casing (including cabling and nodes).
  • Send Node 3 and 4 corroded pins back to Biomark for repair – This means removing both nodes from system. #4 is connected directly to MC – Therefore Antennas 1 & 2 will not be connected during this work.
  • Inspect other canbus connections on site. Send any other corroded nodes back to BIomark.
  • Check each connection is super tight

Biomark believes Node 4 corrosion likely due to loose connection, as exposed pins will arc in water. However; canbus connection from Node 4 male to Female 3 was secure, and was corroded upon opening.

7/30/2021 10:11:00 AM GMC

Cleared Debris and Milfoil on and around all upstream and downstream antennas. 

7/9/2021 1:00:00 PM GMC

Maintenance Check at OKC. Antenna 03 is currently down. Conducted visual inspection and could not find any obvious issues. Likely faulty antenna as it has zero current. Biomark will be manually logging into master controller and tune the antenna while the sockeye are moving through (only during regular work days & hours). This is a mitigation measure for the current season but will need to be removed and replaced or repaired in future.  Also conducted a read range test with test tags. Read range was lower for upstream antennas 01-04.  Antennas 01-04 have higher noise which may be affecting the reduced read range; this is likely due to the proximity to the upstream VDS and the vehicle bridge over the VDS. 

3/18/2021 10:00:00 AM General Inspected nodes 3 and 7, and associated cabling. Attempted to determine the cause of low current in antennas 3 and 7. Could not locate any obvious problems, will need attention in the future.
6/28/2019 11:25:13 AM SiteDown Site was down from approximately 6/20 at 08:26 PM to 6/28 at 10:07 AM due to power issues.
3/16/2017 12:00:00 AM General Installed four new 20' antennas and IS1001 readers upstream of the existing array. New antennas are A1-A4 and existing antennas were renamed to A5-A8.
10/26/2016 1:20:09 PM General A new modem was installed by Skyeler Folks and the site is now automatically uploading data again. I turned on site checking
9/21/2016 3:08:43 PM General Master Controller and IS-1001 firmware was updated from version 1.6.0 to 1.6.1
9/20/2016 8:21:38 AM General I changed the exciter voltage level on all antennas from 4 to 3.
7/11/2016 6:35:27 AM General Switcher batteries were swapped out on Saturday 7/9. I increased the input voltage level to 3 on Monday 7/11.
6/4/2016 7:00:00 AM General The input voltage at the site dropped below 18V on Saturday morning at about 07:45 am PST. This caused the readers to automatically go into standby. I put the readers back into scan mode on 6/6 at about 05:45 am. The input voltage is currently about 22V. One of the switcher batteries has possibly gone bad causing the input voltage to drop.
4/26/2016 4:34:00 PM General The Master Controller and reader firmware were upgraded to version 1.6.0. After the upgrade the Master Controller reverted back to it's default ID of 01 instead of the correct A0. This caused a couple of rejected files last night. I changed the ID back to the correct one and will manually repair the rejected files and re submit them.
9/15/2015 4:06:25 PM General Site file checking has been temporarily disabled.
9/15/2015 2:00:11 PM General On 8/25 and 8/26, the mux reader was replaced with a Master Controller and four IS-1001's.
9/15/2015 2:00:11 PM General A new cell modem was installed at OKC. I configured the modem and downloaded the MC buffer and uploaded the buffer to PTAGIS.
9/15/2015 2:00:11 PM General I reset the MC time, changed the noise alarm threshold to 50% and set the tag unique delay to 1 minute.
9/15/2015 1:57:30 PM General Site checking enabled on 9/15/2015 at 1300 hrs.
8/25/2015 9:00:00 AM SiteDown OKC site is down during reader upgrade since 8/25 a.m. We are replacing the mux with a Master Controller and IS1001 readers. Site checking is off until installation is complete.
6/1/2015 1:14:38 PM General Installed new CR1000 program ver 9.01 which eliminates the manufacturer tag prefix filter.
3/12/2015 8:26:45 PM General O&M visit on 3/12/15. I changed the lithium battery on the mux and re-tuned.
12/15/2014 12:00:27 PM General Tags with the 3DD prefix  were not recorded before 10/22 because the datalogger had incorrect software that did not recognize tags with the 3DD prefix. The correct program was loaded on 11/19 and the mux buffer - which contained tags going back to 10/22 - was uploaded to PTAGIS on files OKC14295.ALL.
7/8/2014 6:36:26 AM General Site went down on 7/5 due to dead batteries. Possible power outage disabled the battery charger? Skyeler Folks replaced batteries on site on 7/7 and got the site back up and running.
2/3/2014 9:17:44 AM General Battery bank B was swapped out with new batteries on 1/31 at 1300 hours.

Archived Event Logs