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Interrogation Site Metadata

MRT - Methow River at Twisp

Status:   Decommissioned
Site Type: Instream Remote Detection System  |  Organization: Bureau of Reclamation
General Operational Period: Year Round
Start Date: 9/28/2009 12:00 AM
End Date: 4/23/2016 10:00 AM

This is a passive in-stream interrogation system on the Methow River at river km 67, above the Twisp River. The system consists of one arrays of six antennas. The array spans most of the channel. All antennas are anchored in a pass-by configuration.


Primary Contact:

Grace Watson

Data Steward:

Jennifer Molesworth


Coordinates: 48.374112, -120.121573  |  River Km: 843.067

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
2016 1/1/2016 12:00 AM 4/23/2016 10:00 AM Site down April 22 due to damage from high flows. Site was removed permanently in August.
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 3/12/2013 3:50 PM 1/1/2014 12:00 AM Site reinstalled with two arrays of 6 antennas each in March. Downstream array was never operational and was removed.
2012 Site was inactive during 2012, but will be reinstalled in 2013.
2011 1/1/2011 12:00 AM 5/24/2011 12:00 AM Down from 2/27/2011 to 3/1/2011. Antennas failed individually between May 16 and May 24, until the site was completely non-operational. Site was not repaired during 2011; will be reinstalled spring of 2012.
2010 1/1/2010 12:00 AM 1/1/2011 12:00 AM All six antennas washed out successively between April 16 and May 17. All antennas were reinstalled on August 31. The system down from 11/28/2010 @ 07:15 to 11/30/2010 @ 09:55.
2009 9/28/2009 12:00 AM 1/1/2010 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:  3/25/2013
End Date:  8/25/2016

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
8/25/2016 9:18:00 AM General Entire system removed from river. This site will not be reinstalled. Site not operational since 4-22-16
4/22/2016 12:00:00 AM SiteDown Site is down - ACN's unplugged and moved due to high flows, eroding bank.
4/24/2015 11:10:23 AM General Lower array of 6 antennas removed in 2013.  They were never operational.  Antenna 1 currently not operational.  Data uploaded daily.
4/7/2014 10:33:22 AM General The USGS will no longer be responsible for this site, please contact Michael Newsom ( if you have any questions about this site.
1/22/2014 7:40:22 AM General MRT is up and running for 2014. data are uploaded daily.

Archived Event Logs