Kerrie McArthur, PWS

Senior Biologist


View resume
Download vCard

  • B.S., Biological Oceanography; Minor in Fisheries, University of Washington
  • Professional Wetland Scientist, #2655, Society of Wetland Scientists
  • Certified Ecological Restoration Practitioner, #0187, Society for Ecological Restoration
  • Certified Fisheries Professional, #3280, American Fisheries Society
  • Fisheries and Aquatic Habitat
  • Water Quality
  • Critical Areas Studies
  • Mitigation Design, Monitoring, & Adaptive Management

Kerrie has a diverse technical background that allows her to bring a big-picture understanding of the scientific and regulatory issues on a client’s specific project. She has completed numerous field surveys and scientific analyses, and participated in regulatory strategy efforts, in the areas of wetlands, water quality, and aquatic habitat restoration in estuarine, marine, and freshwater environments. Kerrie is a Professional Wetland Scientist as well as a Certified Fisheries Professional and Certified Ecological Restoration Practitioner.

Examples of Kerrie’s project work include the following:

  • As project manager for the Middle Creek Culvert Improvements Biological Evaluation in the Willapa Bay Tributary, Kerrie managed and prepared a biological evaluation to assess potential impacts from proposed instream habitat improvements on species listed or proposed for listing under the Endangered Species Act. Instream habitat improvements included replacing fish barrier culverts and placing large woody debris to improve spawning and rearing habitat.
  • Kerrie served as the project manager for the confluence of Mill Creek & Green River Restoration project for the City of Kent. She managed and produced a feasibility study and 30-percent design to create a side channel and associated habitat at the confluence of Mill Creek and the Green River to increase access to floodplain habitat for Chinook and other salmonids and to restore floodplain functions. Kerrie synthesized this information according to the standard EPA Watershed Assessment of River Stability & Sediment Supply (WARSSS) protocol. She evaluated fish habitat following the methods outlined by the Washington Forest Practices Board (WFPB) and applied the Habitat Equivalency Analysis model to evaluate increased values in habitat resulting from implementation of the restoration plan.
  • As lead biologist and later project manager for an Industrial Development Project for Sierra Pacific Industries, Kerrie managed the mitigation planning efforts for this project. The client proposed an advanced mitigation scheme to preserve more than 150 acres of high-quality riparian wetlands along a major salmon-bearing river to mitigate the potential loss of the degraded wetlands on the industrial property. The conceptual design was completed with plans to provide the design to the future purchaser and developer of the property.

“Kerrie has performed extensive surveys on our projects dealing with critical area habitats, wetlands, wetland mitigations, buffering averaging and monitoring. Kerrie’s work was performed at the highest level of proficiency, professionalism, and integrity and with a great level of success with regulators.”
– Gary Blanc, Manager Land Investment and Development, Sierra Pacific Industries