Site Type

Site Name


LMT - Lower Mainstem Teanaway River

The lower Teanaway pit tag array was installed in 2010 near the mouth of the Teanaway river, under the HWY 10 bridge . The site had MUX with 2 rows of 3-20’ schedule 80 PVC antennas and used solar panels to generate power. After an historic flow event in the fall of 2015 the decision was made to relocate the site to a more stable location and upgrade the equipment with more durable HDPE antennas and IS1001 readers and controller. In October of 2018, the site was relocated 200’ below Lambert bridge, 5 miles east of Cle Elum Washington (47.174326, -120.836400). The IS1001 MTS is powered by a 200 Ah 24V battery bank charged with a 24V, 8A Interacter charger which is connected to grid power. There are two CAN bus trunk lines ~60’ long that are connected to the upper and lower rows of ACNs. The submersible enclosures for the IS1001s were constructed by Yakama Nation Fisheries and consist of schedule 40 PVC with various fittings. The submersibles were pressure tested to ensure a water tight enclosure. They are located 8’ below each antenna and are daisy chained together. Hydrovolt plugs are located between each submersible for the CAN bus cabling and from submersible to antenna allowing each component to detatch under extreme flow conditions. The CAN bus cabling is routed in a straight line 8’ below each row of antennas and is secured to 3/8” stainless steel cable using zip ties. The stainless steel cable is secured to the substrate with MR-4 anchors, ~10’ apart. Both rows of antennas consist of 3, 25’X30” HDPE flat plates constructed by Yakama Nation spanning the entire channel under most flow conditions. The antennas are secured to the substrate using MR-4 anchors and a combination of NRS and ratchet straps. The site was installed in July 2018 by WDFW and Yakama Nation staff and started collecting data on 10/15/2018 at 13:15.

Operated by:


First year:


Last year:




Site Contacts


Zack Mays
(509) 899-2422


Gabriel Temple
(509) 933-6080


Photo Gallery

Operational Dates

Year Start Date End Date Notes
2014 1/1/2014 12/9/2014 Antenna 1 down until February 4.
2016 Site did not operate this year.
2015 2/3/2015 11/18/2015 High flows severely damaged the site on November 18.
2017 Site did not operate this year.
2010 5/1/2010 12/16/2010 First year of operation. There was a power loss on 07/17/2010 from 3:27pm until 07/20/2010 at 3:57pm. There was a power loss from 16dec, 2010 until 11jan 2011.
2011 1/11/2011 4/1/2011 There was a power outage from 16dec, 2010 until 11jan, 2011. Only one antenna was functioning between Feb. 16 and 24. All antennas lost power during a high water event in early April, and the remained off line for the remainder of the year.
2012 10/31/2012 1/1/2013 The site was reinstalled 400m downstream from original location on October 31.
2013 1/1/2013 1/1/2014
2018 10/15/2018 1/1/2019 Site was reinstalled upstream of original location with upgraded antennas and an IS1001-MTS in October.

Current and Historic Site Configurations

Config Seq: 110

Start Date: 10/15/2018

End Date:

Config Seq: 100

Start Date: 5/1/2010

End Date: 12/7/2015

Event Logs