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Interrogation Site Metadata

UNT - Upper Nason Temporary Array

Status:   Decommissioned
Site Type: Instream Remote Detection System  |  Organization: Washington Dept. of Fish and Wildlife
General Operational Period: Seasonally
Start Date: 3/11/2011 12:00 AM
End Date: 5/13/2012 12:00 AM

This site is a temporary PIT tag detection system located at rkm 24.8 on Nason Creek. The detection system consists of two 15-foot antennas in a single row, installed in pass-through configuration. The row of antennas spans the wetted width of the channel during base flows. The antennas are operated by Allflex RM 310 reader boards. Data from each antenna is stored on an Acumen DataBridge. A 6 VDC battery bank powers the detection system. The antennas were built and installed by WDFW. The site is typically installed and operated March-June annually.


Data Steward:

Matthew Stilwater


Coordinates: 47.775341, -120.916579  |  River Km: 754.089.025

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
2012 3/8/2012 12:00 AM 5/13/2012 12:00 AM Site down from April 23-May 7
2011 3/11/2011 12:00 AM 5/15/2011 12:00 AM Site down from March 31-April 12


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:  3/1/2011
End Date:  5/13/2012

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
3/19/2014 12:00:00 PM General UNT has previously been installed annually from March to June. UNT was not installed in spring of 2014.

Archived Event Logs