McDonald Slough Reconnection Project Effectiveness Monitoring

Summary: McDonald Slough is connected to the North Fork Nehalem River through a muted tidal regulator tide gate installed in the Summer of 2016. The existing tide gates were replaced as they were undersized and failing. The muted tidal regulator tide gate allows for greater fish passage, better tidal flushing of the slough, and improved slough water quality. This monitoring project is tracking the water quality changes by measuring water depth, temperature, and salinity as well as recording when the gate is opened or closed. This water quality data is being collected and uploaded to an online database remotely. Tracking these water characteristics can inform future decisions about tide gates and the impact of more fish friendly tide gates.

Status: In progress. This project is currently ongoing and the data is being used for watershed council reports and by a graduate student from Portland State University.

Partners: The Neahring Family, Confluence Consulting, Nehalem Marine, Oregon Department of Fish and Wildlife, Oregon Department of Environmental Quality, Pacific Shellfish Institute, The Port of Nehalem.

Funders: Oregon Watershed Enhancement Board, The Neahring Family, Confluence Consulting, Nehalem Marine, Oregon Department of Fish and Wildlife, Oregon Department of Environmental Quality, Pacific Shellfish Institute, The Port of Nehalem.