Site Type

Site Name


CHL - Lower Chiwawa River

This is a permanent instream PIT tag interrogation site at rkm 1 on the Chiwawa River. The site consists of two rows of antennas, with each row spanning the wetted width of the channel during base flows. Each row consists of 3 20-foot PVC antennas, installed in flat-plate configuration. The FS1001M transceiver is powered by grid. The antennas were built and installed by WDFW. A cellular modem is installed on site to provide remote communication and allow for automated data collection. A submersible pressure transducer and temperature probes are installed on site to monitor environmental conditions.

Operated by:


First year:


Last year:




Site Contacts


Kevin Peterson
(208) 275-0011


Jay Deason
(509) 664-3148 x22


Photo Gallery

Operational Dates

Year Start Date End Date Notes
2014 1/1/2014 1/1/2015
2015 1/1/2015 1/1/2016
2016 1/1/2016 1/1/2017 Start and end dates based on timer tags.
2017 1/1/2017 1/1/2018 Start and end dates based on timer tags.
2008 3/3/2008 1/1/2009 2008 was the first year of activity at the Lower Chiwawa River site. The site was out of service between April 25 and July 27 due to a MUX malfunction.
2009 3/3/2009 1/1/2010 The CHL site was inactive between January 1 and March 3, 2009.
2010 1/1/2010 1/1/2011
2011 1/1/2011 1/1/2012
2012 1/1/2012 1/1/2013
2013 1/1/2013 1/1/2014 No reported interruptions in operations.
2018 1/1/2018 12/17/2018 Start and end dates based on timer tags.

Current and Historic Site Configurations

Config Seq: 100

Start Date: 3/3/2008

End Date:

Event Logs