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  • March

    Members of the National Technical Committee for the Ordinary High Water Mark pose in New Orleans. Pictured are Steven Kichefski (USACE Wilmington District), Ken Fritz (EPA), Ellen Wohl (CSU Professor), Brian Topping (EPA), Gabrielle David, and Aaron Allen (USACE Los Angeles District).

    ERDC’s Environmental Lab publishes first-of-its-kind National Ordinary High Water Mark manual

    The U.S. Army Engineer Research and Development Center (ERDC) Environmental Laboratory (EL) recently published a groundbreaking technical guide geared toward identifying Ordinary High Water Marks (OHWM) across the nation.

  • January

    The National Technical Committee for Ordinary High Watermarks (OHWM), made up of researchers from the U.S. Army Engineer Research and Development Center’s (ERDC) Cold Regions Research and Engineering Laboratory (CRREL), the Environmental Protection Agency, regulators from the U.S. Army Corps of Engineers and other academic institutions, stand in front of a waterfall following a field test of an interim OHWM identification data sheet.

    ERDC Releases New Data Sheet for Identifying Ordinary High Watermarks

    For 10 years, the U.S. Army Engineer Research and Development Center’s (ERDC) Cold Regions Research and Engineering Laboratory (CRREL) has  led research on the development of a national manual and data sheet to identify the Ordinary High Water Mark (OHWM) across the United States. The national manual was released as an interim draft and describes the OHWM, which is used to define the boundaries of aquatic features for a variety of federal, state and local regulatory purposes.