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Interrogation Site Metadata

LBT - Little Bridge Creek (Twisp R.)

Status:   Decommissioned
Site Type: Instream Remote Detection System  |  Organization: Yakama Nation
General Operational Period: Year Round
Start Date: 1/1/2013 12:00 AM
End Date: 6/9/2015 12:00 AM

This site contains two permanent allflex antennas and one temporary seasonal antenna. The site is on Little Bridge Creek, just upstream (200m) from its confluence with the Twisp River, in the Methow River watershed of the Upper Columbia Basin.


Primary Contact:

Matt Abrahamse

Data Steward:

Keely Murdoch


Coordinates: 48.380750, -120.286700  |  River Km: 843.066.014.001

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
2015 4/9/2015 12:00 AM 6/9/2015 12:00 AM
2014 1/9/2014 12:00 AM 6/8/2014 12:00 AM
2013 1/1/2013 12:00 AM 1/1/2014 12:00 AM No data from October 16-December 12 due to malfunctioning data logger.


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:  4/16/2014
End Date:  6/9/2015

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

Event Date Event Type Comments
12/31/2016 3:29:00 PM General Site not operated during 2016 due to high stream flow during normal operation period.
6/8/2014 1:49:00 PM SiteDown Temporary array removed for 2014 season
6/5/2014 8:30:08 AM General Updated site configuration to 110, with addition of temporary antenna upstream of the two permanent antennas.
5/27/2014 5:19:00 PM SiteUp Batteries replaced
5/26/2014 9:17:00 AM SiteDown Power loss
5/9/2014 1:49:00 PM SiteUp Temporary array replaced after stream flow decreased
5/6/2014 2:27:00 PM SiteDown Power restored
5/5/2014 9:17:00 AM SiteDown Power loss
5/3/2014 10:30:00 AM SiteDown Temporary array removed due to high stream flow
4/24/2014 1:22:00 PM SiteUp Power restored
4/23/2014 9:00:00 PM SiteDown Power loss
4/17/2014 9:01:00 PM SiteDown Array down due to power loss.  
4/16/2014 10:40:00 AM General Temporary array installed upstream of existing array.  Temporary array coil numbered 01.  Existing, permanent downstream array coils renumbered A1 and A2.  
4/13/2014 10:08:00 AM SiteUp Batteries replace.  Site active
4/10/2014 11:48:00 PM SiteDown System down due to power loss
4/7/2014 4:00:00 PM SiteUp Batteries replace. System active
4/7/2014 11:00:00 AM General USGS is no longer managing the LIttle Bridge Creek interrogation site. Keely Murdoch ( is the new site steward and Matt Abrahamse ( is the new POC.
4/7/2014 10:33:22 AM General This site is back up and running. The USGS will no longer be responsible for this site, please contact Michael Newsom ( if you have any questions about this site.
4/6/2014 3:00:00 AM SiteDown System down due to power loss.
3/6/2014 7:45:24 AM General Down from 1-15-14 @14:08. New converter box is kaput – only putting out 4.5V with fresh batteries 25.2V going in.
2/11/2014 11:04:20 AM General Data uploaded from 1/9/14 15:00 through 1/15/14 15:00. down from 1/15/14 at 14:08 through 2/3/14 at 11:44. lost data due to datalogger program. was updated.
1/13/2014 1:02:57 PM General Down from 10-16-13 at 20:10 to 1-9-14 at 15:27 due to a lengthy diagnosis of a non-cooperative power converter. Has been swapped with new converter and now works.
12/12/2013 8:35:10 AM General data logger is not working and erasing data. We are working with company to fix this issue. No data from 10/16/13 20:10 through 12/6/13 10:56.

Archived Event Logs