eDNA

The eDNA program is a research method whereby stream water is collected and analyzed in the lab to detect DNA molecules. The analysis helps determine which fish species have been present within the water system. The results of our eDNA project not only determine the value of the stream to salmon recovery but also determine where funding and restoration should take place. 

NEWSS engaged with School District 91 and researchers from the University of Northern British Columbia in the Natural Resources and Environmental Studies Institute and Department of Ecosystem Science and Management - Dr. Brent Murray - to conduct a 5-year eDNA project in streams in the Nechako Watershed between McPhee Creek (Prince George) and Twin Creek (Upper Nechako, below the Kenney Dam). The focus was on sockeye, coho and chinook salmon, however other fish species were also monitored.

The project ran from 2020 to 2025. Reports for this project were published in 2025 and 2026. 

NEWSS Salmon Recovery Projects eDNA Research August 2025 Report

NEWSS Salmon Recovery Projects eDNA Research May 2026 Report

About

Twin Creek

Twin Creek post bridge installation

Since the bridge installation, the UNBC eDNA program continues to confirm that Twin Creek is an important non-natal stream adjacent to spawning habitat in the Nechako River. This project replacement opened up several kilometres of pristine rearing habitat.

The increased habitat access because of the bridge installation makes this an important non-natal stream for Chinook salmon fry rearing.

Learn more about Twin Creek

 

 

Murray Creek

eDNA truthing

Murray Creek runs through agricultural lands within the town limits of Vanderhoof, and its outflow is just upstream of the only known spawning location for the endangered Nechako White Sturgeon. Much work has been done on Murray Creek over the years through support of NEWSS.

Shown here is a section of the Murray Creek channel that is well protected from livestock due to measures made by landowner. The eDNA crew in the first year of this project, are sampling to determine fish species presence/absence by fishing (an accepted methodology).

This fish was caught during eDNA sampling for fish presence/absence in Murray Creek near the Erikson Road crossing. This fish clearly demonstrates fish rearing in lower Murray Creek.

Fish caught in Murray Creek during eDNA sampling.

Learn more about Murray Creek