Please note: You will receive an invoice which includes instructions for payment. Payments must be received at least two weeks prior to the class date to secure your registration. Cancellations must also be received at least two weeks prior to be eligible for a refund.

Using the Washington State Wetland Rating System (2014) in Western Washington - virtual with field site visit (on 10/20 in Thurston County)

  • Wednesday, October 18, 2023
  • Friday, October 20, 2023
  • 3 sessions
  • Wednesday, October 18, 2023, 9:00 AM 12:30 PM (PDT)
  • Thursday, October 19, 2023, 9:00 AM 12:00 PM (PDT)
  • Friday, October 20, 2023, 9:00 AM 4:30 PM (PDT)
  • Virtual on 10/18 and 10/19 and in-person at a field site on 10/20
  • 0


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This three-day intensive workshop will provide wetland regulators and consultants with practical information and experience in using the 2014 update to the rating system for wetlands in western Washington. It is specifically designed for those who will be using the rating system in the field. You will gain a working knowledge of topics such as the hydrogeomorphic classification of wetlands, how to separate wetlands into units for rating, and how to answer all the questions on the field form. The purpose of the class is to provide you with knowledge so that you can fill out the rating form on your own. You will receive a copy of the rating system manual.

It is important that you already have some experience and/or education in delineating wetlands and identifying natural wetland features such as outlets, boundaries of basins, vegetation classes, and some ability to distinguish between different plant species.

This course will include two required virtual sessions on Zoom on 10/18 (9:00 am - 12:30 pm) and 10/19 (9:00 am - 12:00 pm). Participants will visit sites with the instructor in Thurston County on 10/20 (9 am - 4:30 pm). The sites are located at the Woodland Creek Community Park in Lacey, WA and Capitol Lake Interpretive Park in Olympia, WA. Please note that it is mandatory to attend the virtual sessions on 10/18 and 10/19 and in-person field session on 10/20 in order to obtain your certification for the rating system (13.5 CM AICP Credits/CEP Points)

Lunch is provided.


Please reach out to Sara Brostrom ( if you require an accommodation for this training (audio, visual, mobility, or other). Additionally, we can offer a couple of scholarship to cover the registration fees with each training. Please reach out if you need a scholarship in order to participate in the training.

Link to rating system:


Dr. Amy Yahnke is the senior wetland ecologist for the Shorelands and Environmental Assistance Program at the Washington State Department of Ecology. She holds a Certificate in Wetland Science and Management, BS in Environmental Horticulture, MS in Forest Resources, and PhD in Aquatic and Fishery Sciences. She has studied wetland ecology within the contexts of amphibians, invasive plants, and stormwater management. Dr. Yahnke has experience teaching a wide range of environmental topics to audiences of all ages.

Washington State Department of Ecology 


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