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Interrogation Site Metadata

CFJ - Clark Flat Acc. Pond

Status:   Active - Non-Operational
Site Type: Monitored Fish Release  |  Organization: Pacific States Marine Fisheries Commission
General Operational Period: Seasonally
Start Date: 3/15/1999 4:33 PM

This site monitors volitional releases from Clark Flat acclimation pond, which is part of the Cle Elum Supplementation and Research Facility. It operates seasonally from when fish are delivered to the pond until after all fish have been forced out at the end of the volitional release period.

Current Operations

Last File Loaded: CFJ-2022-176-P-018.json
Date Last File Loaded: 6/25/2022 7:02 PM
Date Last File Opened: 6/25/2022 5:00 PM
Date Last File Closed: 6/25/2022 6:00 PM
Last Observation Tag: 3DD.00779C03F4
Last Observation Date: 6/2/2022 1:45 PM
Detection Summary: Last Day's Observations


Primary Contact:

Don Warf

Data Steward:

Nicole Tancreto


Coordinates: 47.104300, -120.722700  |  River Km: 539.270

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 2/9/2021 7:00 AM 5/14/2021 12:00 PM
2020 1/22/2020 12:00 AM 5/18/2020 12:00 AM
2019 3/14/2019 10:00 AM 5/14/2019 2:00 PM Start date and end dates represent the start and end of volitional release.
2018 1/29/2018 8:00 AM 5/18/2018 12:00 PM Volitional release began March 15.
2017 1/24/2017 12:00 AM 5/22/2017 12:00 AM Fish were delivered to the pond Jan 24 and pushed out of the raceways May 15.
2016 1/25/2016 12:00 AM 5/13/2016 12:00 AM
2015 1/12/2015 12:00 AM 5/15/2015 12:00 AM Fish were delivered to the site on 1-12-15.
2014 1/6/2014 12:00 AM 5/20/2014 12:00 AM Fish were delivered to pond on January 6. Raceways were cleaned and water was turned off on May 20.
2013 2/4/2013 12:00 AM 5/17/2013 7:59 AM Fish were delivered to pond by January 10. Raceways and creek were cleared of fish May 15-17.
2012 1/14/2012 12:00 AM 5/16/2012 12:00 AM Fish were delivered to the pond sometime in January. Volitional release began on March 15. Remaining fish were forced out of the pond and channel on May 16.
2011 1/20/2011 12:00 AM 5/17/2011 12:00 AM Fish were reportedly delivered to the Clark Flat acclimation ponds on January 20. Volitional release began on March 15. Remaining fish were pushed out May 17.
2010 1/14/2010 12:00 AM 5/25/2010 12:00 AM Fish were delivered to the acclimation ponds on Jan. 14-15, 2010. The screens were pulled on March 15 to allow volitional egress. The facility was shut down on May 25.
2009 1/21/2009 12:00 AM 5/18/2009 12:00 AM Fish were ponded on Jan. 21-22. The volitional release began on March 16. All remaining fish were forced from the ponds on May 15.
2008 1/9/2008 12:00 AM 5/22/2008 4:30 PM Fish were ponded at Clark Flat on January 8-9, 2008. The volitional release began at noon on March 14. Any remaining fish were forced out of the raceways on May 14, into the channels above the PIT tag detectors. All fish remaining in the release channel were pushed through the PIT tag detectors on May 22, 2008.
2007 2/1/2007 12:00 AM 6/15/2007 12:00 AM Fish were ponded into the Clark Flat Acc. Facility by Feb. 1, 2007. Volitional release began on March 15, 2007. All remaining fish were forced from the ponds on May 15, 2007. The facility was dewatered on June 15, 2007.
2006 1/20/2006 12:00 AM 5/23/2006 12:00 AM Fish were transferred into the Clark Flat Acclimation Ponds between Jan. 20 and Jan. 23, 2006. Fish were allowed to volitionally exit the ponds beginning on March 15. All fish were flushed out on May 15, 2006 and screens were pulled to allow for volitional release. Clark Flat was dewatered on May 23, 2006.
2005 1/26/2005 12:00 AM 5/21/2005 8:00 PM Fish were introduced into the Clark Flat acc ponds on or before January 26, 2005. Volitional release began on March 9. All remaining fish were pushed out on April 28; 57 PIT tags were detected in the discharge channel between April 29 and May 8, and two tags were detected on May 21.
2004 1/15/2004 9:00 AM 5/21/2004 12:00 AM Fish were introduced into the Clark Flat Acc. Ponds beginning on 1/15/04. Volitional release began on March 15. All remaining fish were pushed from the ponds on May 14, but water was left running until May 21 to prevent stranding between the ponds and the river.
2003 1/13/2003 6:00 AM 5/16/2003 6:00 PM Fish were delivered to the ponds on Jan 13-14. The scheduled release is documented as beginning on March 14. Remaining fish were crowded from ponds on May 15. Last tags were detected in the exit channel on May 16.
2002 1/15/2002 9:00 AM 5/31/2002 2:30 PM Fish delivered 1/15; screens pulled 3/15; no idea when the ponds were emptied.
2001 1/22/2001 8:00 AM 6/1/2001 8:00 AM Screens pulled on 3/15/01; site dewatered by 6/1/01.
2000 1/28/2000 5:55 PM 6/12/2000 11:00 AM First year of operation. Contact YIN for the actual dates of release.
1999 3/15/1999 4:33 PM 5/24/1999 1:34 PM Dates and times based on first/last reported detections.


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:  1/22/2001
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

This displays the last 25 events, to see the full history, log in to the Dashboard and go to Interrogation Site > Event Logs.

Event Date Event Type Comments
5/27/2022 3:00:00 PM SiteDown

According to site Manger Charlie Strom the facility was cleaned up and water was turned off. The creek was cleared of all remaining fish. However because of very high river flows there detections on the monitors after this date. When the river is high enough there is a possibility for fish to swim back into the monitors.

3/30/2022 11:00:00 AM General

Patch file CFJ-2022-089-X-012.json was submitted with id 30819691 to fill data gap on 3/30/2022.

3/30/2022 10:32:00 AM GMC

Checked and tuned transceivers. Replaced UPS1 and UPS2 with Lieberts.


3/2/2022 3:00:00 PM General

M5 was upgraded to v1.8.8 3-2-2022.

3/2/2022 2:00:00 PM General

Examination of secondary data shows that no detections occurred during the 7 minute gap on 3-2-2022.

3/2/2022 12:00:00 PM General

Upgraded M5 to version 1.8.8 on primary and secondary PCs. 

1/25/2022 12:00:00 PM SiteUp

The season started 1-25-2022 at 1200.

12/13/2021 7:27:56 AM ErrorsCleared Probable UPS failure. To be replaced next site visit.
12/12/2021 9:33:12 AM ErrorsCleared Noted.
12/11/2021 9:19:41 AM ErrorsCleared Noted. UPS died.
12/10/2021 8:03:08 AM ErrorsCleared Noted
12/9/2021 7:34:57 AM ErrorsCleared To be investigated.
9/22/2021 8:47:23 AM ErrorsCleared Noted.
9/16/2021 7:56:31 AM ErrorsCleared To be investigated.
8/31/2021 2:00:00 PM General

Site was upgraded to M5. New panel was installed with Phoenix Contact data collection PC's. Old platform PC's were removed. Uploads and RDP session was tested.

5/14/2021 12:00:00 PM SiteDown

The season ended 5-14-2021 at 1200.

3/30/2021 7:51:24 AM General File CFJ-2021-088-X-014 was created from secondary data and completely fills the data gap on 3-29-2021.
2/9/2021 7:00:00 AM SiteUp CFJ up Up 2-9-2021 0700
9/27/2020 8:34:57 AM TASS Not of concern, alarms caused by maintenance,.
8/3/2020 8:06:53 AM General Sonicwall tunnel is down, the modem is up. Cannot re-establish tunnel from either K office SW or the remote CFJ SW. The site is down for the season.
7/28/2020 2:29:07 PM General Replaced UPS for A1 and B1. No problems to report.
6/22/2020 7:48:47 AM TASS Noted
6/20/2020 5:44:22 PM General Remotely disabled no response alerts for transceivers A2 and B2 on the primary and secondary PC. Most likely the UPS for these transceivers has died. Not of concern at this time due to site being down for the season.
6/20/2020 6:46:02 AM TASS Power outage.
6/19/2020 7:05:42 AM TASS Probable UPS fail at transceivers.