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April 13, 2024
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The Hydrogeomorphic Methodology for the Functions of Waters and its Applications
Course ID: HYD-603
Hosted by Northwest Environmental Training Center

The Hydrogeomorphic Methodology (HGM) is a tool to rapidly assess the ecological functions of “waters” such as streams, wetlands and lacustrine fringes. As the emphasis on ecological functions increases in environmental management, impact assessments, and restoration/mitigation, the need to utilize functional assessments such as HGM increases. The Rapanos guidance from the USACE emphasizes the use of functional assessments, along with hydrologic assessments to determine the jurisdictional status of waters and HGM has been used to satisfy the functional assessment. The HGM has been regionalized for a number of locations throughout the US, and in Washington State is the basis for Washington State Method for Assessing Wetlands and in Oregon for the Hydrogeomorphic Guidebooks for Assessing Wetlands.

This course will teach the basic concepts of HGM, including the various Hydrogeomorphic Classes of waters. The course will run through the assessment method in the classroom, followed by a field assessment in the Seattle area. The course will demonstrate practical uses of the HGM system, including using the system to demonstrate Clean Water Act jurisdiction, and the use of HGM in restoration/mitigation.

Registration: $495 (*$395 reduced tuition is available for Native American tribes; government employees; nonprofits; students; and NAEP, NEBC, NWAEP members). Additional discounts apply when registering for this course in conjunction with BIO-303 and BIO-304. You may register via the link below or by calling the Northwest Environmental Training Center at 206-762-1976.
For general information contact Eldan Goldenberg by telephone at 206-762-1976 or via e-mail at

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