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Interrogation Site Metadata

LNR - Lower Naches River

Status:   Decommissioned
Site Type: Instream Remote Detection System  |  Organization: Yakama Nation
General Operational Period: Year Round
Start Date: 11/5/2016 12:00 AM
End Date: 5/30/2020 12:00 AM

This site is a permanent instream PIT tag detection system located at rkm 5.3 on the lower Naches river, 700 meters below Nelson dam. Prior to 10/29/2018, the site consisted of one row of five 28 ft x 3 ft flexible antennas mounted to wooden 2 X 4 backbones and anchored to the riverbed with MR-4 anchors. Due to extreme flow conditions in the Naches river, 3 inch HDPE antennas were constructed by Yakama Nation Fisheries to replace the flexible antennas. An IS1001 MTS was installed to replace the Qube. The 3-wire cable was replaced with CAN bus with a 100 ft trunk line running to ACN #5. All IS1001s are daisy chained together with hydrovolt plugs to allow removal/replacement of individual submersible enclosures and antennas. Five 25 ft x 31 inch HDPE antennas were installed using the existing MR-4 anchors. Additional anchors were installed to secure the IS1001 enclosures that are anchored 8 ft below the row of antennas. The site is powered with a 5060 Thermo-electric generator fueled with portable propane tanks.


Primary Contact:

Chris Frederiksen

Data Steward:

Zack Mays


Coordinates: 46.631484, -120.578716  |  River Km: 539.187.005

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 5/30/2020 12:00 AM Site was destroyed spring of 2020 and will not be installed
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 file open and close dates. Site down May 4 - October 29.
2017 1/1/2017 12:00 AM 1/1/2018 12:00 AM Start and end dates based on file open and close dates.
2016 11/5/2016 12:00 AM 1/1/2017 12:00 AM Start and end dates based on file open and close dates.


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:  11/6/2016
End Date:  5/30/2020

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
2/20/2020 10:35:46 AM General On January 16th, 2020, a large tree damaged the Can bus cabling running to antenna 1. Although the site was still collecting data, antennas 2-5 were not functioning properly. Towards the end of January, a high flow event caused further damage to the cabling completely disabling antennas 2-5. The site is currently down until further notice.
12/18/2018 4:09:09 PM General On 12/18/2018 at 3:45 PM, antenna 5 was fixed and added back into sequence.
12/10/2018 2:00:00 PM General Propane tanks were refilled and power was restored to the site at this time.
11/29/2018 10:23:00 AM General On 11/29/2018, the TEG ran out of fuel. By 10:23 AM, antennas stopped collecting data.
11/15/2018 11:00:00 PM General Around 11:00 PM on 11/15/2018, a coyote chewed through ACN #5 cable that connects the IS1001 to the antenna. Antenna 5 is largely out of the water during current low flow conditions. Little of no detection data is expected to be lost. Antenna 5 should be fixed prior to Jan 1, 2019.
11/8/2018 4:00:00 PM General An 8' ground rod was installed with a single point grounding configuration between the 5060 TEG and MTS enclosure greatly reducing noise levels on all antennas. This is reflected in the status reports starting at 4:22 PM on 11/8/2018. Read-ranges for all antennas increased 8-10".
10/29/2018 3:20:03 PM General LNR was rebuilt and installed in October of 2018. New configuration information can be found under the revised site description. The site was powered back up on 10/29/2018 and started collecting data at 3:20 PM.

No Archived Event Logs