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Interrogation Site Metadata

CHW - Chiwaukum Creek

Status:   Active - Non-Operational
Site Type: Instream Remote Detection System  |  Organization: Washington Dept. of Fish and Wildlife
General Operational Period: Year Round
Start Date: 4/26/2011 6:03 PM

This site is a permanent instream PIT tag detection system located at rkm 0.4 on Chiwaukum Creek (Wenatchee River Basin), located near Tumwater Campground (access through site 51). The site consists of two rows of antennas, each row with three 10 foot antennas, installed in a flat plate configuration. Each row spans the wetted width of the channel during base flows. The antennas were built and installed by WDFW. Power to the FS1001M transceiver is provided by a thermoelectric generator on site.

Current Operations

Last File Loaded: CHW-2022-143-P-06A.xml
Date Last File Loaded: 6/7/2022 9:11 AM
Date Last File Opened: 5/23/2022 12:57 PM
Date Last File Closed: 6/6/2022 1:00 AM
Last Observation Tag: 3DD.003DA289EF
Last Observation Date: 6/5/2022 3:50 AM
Detection Summary: Last Day's Observations


Primary Contact:

Matthew Stilwater

Data Steward:

Jay Deason
509-664-3148 x22


Coordinates: 47.681436, -120.731185  |  River Km: 754.057.000

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 1/5/2021 12:00 AM 9/11/2021 12:00 AM Start and end dates based on timer tags.
2020 1/1/2020 12:00 AM 12/14/2020 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 Site down April 5-7. Antenna B5 down June 12-August 16.
2013 1/1/2013 12:00 AM 1/1/2014 12:00 AM No reported interuptions in operations.
2012 1/1/2012 12:00 AM 1/1/2013 12:00 AM
2011 4/26/2011 6:03 PM 1/1/2012 12:00 AM First year of operations. All data from December 1-7 was lost due to a transceiver error.


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:  8/17/2011
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.

Select Equipment Type:
Equipment Code Description Start Date End Date

No Photos

Event Log Summary

Event Date Event Type Comments
2/16/2022 3:06:00 PM SiteDown

Site was down from 16-25 February as there was no way to get propane to site. 

8/19/2020 1:00:00 PM General At interrogation site CHW on 8/19/2020 at approximately 1:00 PM, Antenna #5 was replaced.
7/24/2019 12:00:00 PM General Coax cable to antenna 3 was broken by debris. Coax was replaced and all antennas are working.
7/17/2018 1:00:00 PM General At interrogation site CHW on 7/17/2018 at approximately 1:00 PM, Antenna #6 was brought back online. Antenna #6 was broken and was replaced with an HDPE antenna. All antennas at this site are functioning. Site is fully operational.
7/24/2017 10:00:00 AM General At interrogation site CHW on 7/24/2017 at approximately 10:00 AM, Antenna #6 was replaced. All antennas at this site are functioning. Site is fully operational.
5/30/2017 3:00:00 PM General At interrogation site CHW on 5/30/2017 at approximately 3:00 PM, Antenna #6 lost power. All other antennas are functioning and operational.
8/19/2016 1:00:00 PM General At interrogation site CHW on 8/19/2016 at approximately 1:00PM, antenna #6 was replaced, cable for antenna #5 was replaced, and also cable for antenna # 6 was replaced. All antennas are functioning properly. Site is fully operational.
3/3/2016 3:35:00 PM General At interrogation site CHW, Antenna #6 was reinstalled on 3/3/2016 , but is running at low current. Antenna #6 is not operating at full function.
3/3/2016 8:57:00 AM General At Chiwaukum Creek interrogation site, antennas 1,2,4,5,6 were replaced. Antenna 6 still has low amps, antennas 2 and 5 have high noise.
1/19/2016 3:00:00 PM SiteDown At the CHW interrogation site the thermoelectric generator shut off causing the site to lose power from 1/16/2016 at 10:08 to 1/19/2016 at 12:23.
11/20/2015 9:21:04 AM General At interrogation site CHW antenna #2 lost current on 10/31/15 at 14:58:15. Antennas #1, 4, 5, 6 lost current on 11/17/15 between 16:48 and 18:00.
6/29/2015 1:27:00 PM General No reported interruptions in operations from 7/29/2014-6/29/2015.
7/29/2014 1:27:00 PM SiteUp Site reinstalled after fire danger passed.
7/17/2014 11:44:26 AM SiteDown At approximately 10:00am on 7/17/2014 the CHW interrogation site was shut down and vital equipment and fuel removed due to eminent fire danger. New log event to follow after reinstallation.
7/16/2014 4:23:08 PM General Antenna #B5 was replaced on 7/16/14. It was damaged and full of water. The last report from this antenna was on 6/12/14 at 00:32:19. All antennas at interrogation site are now working.
4/7/2014 11:24:00 AM SiteUp Propane refilled, backup batteries installed
4/5/2014 11:13:00 AM SiteDown Site ran out of propane, site down
12/31/2013 10:35:00 AM General CHW operated without interruption in 2013

Archived Event Logs