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Interrogation Site Metadata

ZSL - Zosel Dam Combined

Status:   Active - Operations Unspecified
Site Type: Combined Dam Location  |  Organization: Columbia River Inter-Tribal Fish Commission
General Operational Period: Year Round
Start Date: 9/1/2010 12:00 AM

Zosel Dam is located at Okanogan River km 132, approximately 3 km downstream from the outlet of Lake Osoyoos in the town of Oroville, Washington. The dam has two fish ladders and four spillbays. PIT tag detection was established at the dam by attaching antennas to the downstream faces of two weirs in each fish ladder. Each weir has a single vertical slot that is approximately 16 in. wide and 120 in. high. Few juveniles use the fish ladder and, at high water, adults can also bypass the fish ladders by swimming through the spillbays. To detect fish passing through the spillbays, in April, 2015 a 10ft x 4ft floating antenna was added in the west-most spillbay and, on March 16, 2016, a similar antenna was added to the east-most spillbay. These antennas are placed in the middle of the spillbays which are approximately 20ft wide.

Current Operations

Last File Loaded: ZSL-2022-176-P-00F.xml
Date Last File Loaded: 6/26/2022 4:02 AM
Date Last File Opened: 6/25/2022 10:56 PM
Date Last File Closed: 6/26/2022 2:55 AM
Last Observation Tag: 3DD.003DEA4B2F
Last Observation Date: 6/26/2022 2:55 AM
Detection Summary: Last Day's Observations


Primary Contact:

Brett Turley

Data Steward:

Jeff Fryer


Coordinates: 48.933499, -119.419812  |  River Km: 858.132

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
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 9/1/2010 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:  8/31/2021
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


Event Log Summary

Event Date Event Type Comments
4/12/2021 12:47:00 PM General The spillway floating antennas A5 and A6 were re-installed for this season on 4/12/21. They were removed from the spillways on November 19, 2020
3/5/2020 1:21:00 PM General Reader and antenna upgrade completed on 3/5. The mux reader was replaced with IS1001 nodes and Master Controller. 10' floating antennas A5 and A6 were replaced with 15' antennas in the left and right forebays.
4/4/2019 7:02:14 AM General I downloaded the mux buffer and created file ZSL19086.ALL from the tags and manually submitted it. Also I reset the clock to the correct time.
5/1/2018 1:51:22 PM General Antenna 05 was deployed on 4/25.
9/7/2017 12:46:42 PM General Site was down for 48 hours and 12 minutes from 09/05/17 at 11:32 until 09/07/17 at 11:44. The circuit breaker for the PIT Tag enclosure was either tripped or turned off, possibly by maintenance workers working on the dam.
6/30/2017 7:02:05 AM General Site checking turned back on.
6/29/2017 3:59:44 PM General A new serial to Ethernet converter was installed. Automatic data uploading has been resumed.
5/22/2017 7:57:06 AM General I removed the Lantronix serial to ethernet adapter because it appears to be causing high noise on the mux. We will install another adapter when we find a suitable one. Meanwhile all data is being stored on the mux buffer. I also turned off site checking for this site.
4/7/2017 11:24:26 AM General The mux at ZSL is on, however the noise is very high with all antennas registering average noise levels between 30 and 75% and max levels exceeding 90%. I don't know what is causing the noise. The noise is too high for the reader to detect the test tags which is causing the missing file alarms from PTAGIS.
2/21/2017 9:00:00 AM General I installed a new Ethernet to serial data module to replace the one that went bad. Site checking has been turned back on.
11/16/2016 1:40:34 PM General I found tags in the Zosel mux buffer that were not uploaded to PTAGIS. I created file ZSL16189.ALL with those tags and submitted it to PTAGIS.
10/25/2016 12:13:42 PM General Floating antennas A5 and A6 were removed from the water for the winter. I removed the antennas from the mux sequence.
3/16/2016 1:50:00 PM General Antenna 05 in the left spillbay was installed on 3/16. I ran diagnostics on all antennas and retuned 05 and 06. I installed a new lithium battery in the mux.
6/1/2015 1:14:38 PM General Installed new CR1000 program ver 9.01 which eliminates the manufacturer tag prefix filter.
4/1/2015 3:05:00 PM General Antenna 05 was installed in the first bay on 4/1/15. It is a 10' floating antenna.
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.
7/29/2014 9:42:07 AM General I had some intermittent communication problems between the ZSL data logger and  our server that resulted in some data gaps on 7/21 to 7/24 and 7/26 to 7/28. I created patch files ZSL14202.BC9 and ZSL14207.DE9 from the mux buffer to fill in the gaps.

Archived Event Logs