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December 7, 2023
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Delineation of Ordinary High Water Marks & Ordinary High Water Lines
Hosted by Northwest Environmental Training Center

This course is intended for River and Wetland Scientists, Biologists, Hydrologists, Surveyors, Engineering Consultants, Permit Reviewers, and anyone else who makes Ordinary High Water Mark (OHWM) and Ordinary High Water Line (OHWL) delineations on aquatic shorelines. The OHWM is a cornerstone of public trust responsibility and essential to protection of natural resources on rivers, lakes, and marine shorelines. The OHWM is an ecological boundary delineated by scientific methods using field criteria (water, soils, and vegetation) set forth in fe ...  [click for more]

For general information contact Eldan Goldenberg by telephone at 206-762-1976 or via e-mail at

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Bullet  Seattle, WA
  December 9, 2009 - December 10, 2009
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