Site Type

Site Name


LRW - Lemhi River Weir

This is an in-stream interrogation system located on the Lemhi River above the mouth of Hayden Creek and below the IDFG weir. The site consists of two arrays, located serially 15 meters apart with the upstream array having four 10 foot PVC Pipe antennas and the lower array having the two original 20 foot flat-plate Biomark antennas. At low flow, the upper arrays covers the stream channel, the lower array covers all but 1 meter of the stream channel. Water depth, water temperature, and air temperature probes are installed.

Operated by:


First year:


Last year:




Site Contacts


Kevin Peterson
(208) 275-0011


Patrick Uthe
(208) 993-3630


Photo Gallery

Operational Dates

Year Start Date End Date Notes
2014 1/1/2014 1/1/2015
2015 1/1/2015 1/1/2016
2009 8/18/2009 1/1/2010 First year of operation. All activities were interrupted between Sept. 8-14, and again between Oct. 10-12, due to power failures. Operations were interrupted between Oct. 20-28 due to software issues.
2010 1/1/2010 1/1/2011 Interrogation activity was interrupted at LRW from 4/8/10 to 4/12/10, due to a bad battery bank.
2011 1/1/2011 1/1/2012 Four additional antennas installed September 14.
2012 1/1/2012 1/1/2013
2013 1/1/2013 1/1/2014

Current and Historic Site Configurations

Config Seq: 110

Start Date: 9/14/2011

End Date:

Config Seq: 100

Start Date: 8/1/2009

End Date: 9/14/2011

Event Logs