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Interrogation Site Metadata

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CRU - Upper Chewuch Instream Array

Status:   Active - Operational
Site Type: Instream Remote Detection System  |  Organization: Washington Dept. of Fish and Wildlife
General Operational Period: Year Round
Start Date: 7/28/2014 12:00 AM

CRU is a permanent instream PIT tag interrogation site at RKM 28.35 on the Chewuch River. The site consists of two rows of antennas, with each row spanning the wetted width of the channel during base flows. Each row consists of three 20-foot PVC antennas, installed in flat-plate configuration. Each antenna is powered by a Biomark IS1001 (ACN) and the ACNs are connected to a Biomark IS1001-MC (MTS). The antennas were built and installed by WDFW. The site is powered by a thermoelectric generator. CRU has remote communication abilities provided by a cellular modem and Campbell Scientific CR1000 datalogger. A submersible pressure transducer and temperature probe sensors are also installed to provide environmental condition data collection.

Current Operations

Last File Loaded: CRU-2021-274-P-00.xml
Date Last File Loaded: 10/5/2021 4:10 PM
Date Last File Opened: 9/1/2021 12:00 PM
Date Last File Closed: 10/1/2021 12:00 PM
Last Observation Tag: 3D9.1C2E05F5CF
Last Observation Date: 9/9/2021 9:30 AM
Detection Summary: Last Day's Observations


Primary Contact:

David Grundy

Data Steward:

Jay Deason
509-664-3148 x22


Coordinates: 48.669459, -120.137058  |  River Km: 843.080.028

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
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 12/1/2019 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 1/22/2017 12:00 AM 1/1/2018 12:00 AM Start and end dates based on timer tags.
2016 1/1/2016 12:00 AM 12/15/2016 12:00 AM Start and end dates based on timer tags.
2015 1/23/2015 12:00 AM 1/1/2016 12:00 AM Start and end dates based on timer tags.
2014 7/28/2014 12:00 AM 12/25/2014 12:00 AM Start and end dates based on timer tags.


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:  7/28/2014
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.

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Equipment Code Description Start Date End Date

No Photos

Event Log Summary

Event Date Event Type Comments
10/14/2014 9:37:25 AM General Registered site CRU in PTAGIS.
7/31/2014 10:00:00 AM SiteUp Coils 02 was energized and tuned at this time
7/28/2014 1:40:00 PM SiteUp Coils 01,03,04,05,06 were all energized and tuned at this time

No Archived Event Logs