A Logie 2100C resistivity counter (Aquantic Ltd, Scotland) was installed at the Kloiya River and operational from March 22, 2016 to May 26, 2016. A PVC tube containing three electrodes, fixed to an aluminium fence, was placed near the top of the vertical slot fishway located 2 km upstream of the Kloiya River estuary. When a steelhead migrates through the field, created by the electrodes, the counter detects a change in conductivity. The change in conductivity is analyzed by an algorithm and recorded by the counter. The output is a row of data for each event comprising of the date, time, travel direction and peak signal strength. Electrical power was provided by a stream engine that utilizes the head of water at the site to power the equipment. The first upstream migrant was recorded on March 24, 2016. The last migrant was recorded on May 24, 2016. The equipment was turned off and removed on May 26, 2016. Water temperature was recorded hourly by a HOBO U22 Water Temp Pro v2 data logger (Onset Ltd. Cape Cod, Massachusetts. USA). Secondary temperatures were recorded on hand held HB USA thermometers on site visits. The temperature data logger that was deployed in 2016 was lost during a high water event during the project. Temperature data recorded during site visits will be the only data available for 2016.

Counter efficiency was calculated on trace data collected in 2007. In 2007, trace data was recorded for 74% of the data recorded by the counter. Trace data indicates that the counter efficiency for upstream migrants is 94% and 76% for downstream migrants. After corrections for counter efficiency, the 2016 steelhead escapement upstream of the Kloiya River dam was estimated to be 65.