https://www.erdc.usace.army.mil Engineer Research and Development Center News RSS Feed en-us Fri, 27 Jan 2023 16:10:00 GMT Tue, 17 Mar 2026 00:42:08 GMT https://www.erdc.usace.army.mil/Media/News-Stories/Article/3280392/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.<br/> <img src='https://media.defense.gov/2023/Jan/27/2003151072/115/75/0/221111-A-LI860-007.JPG' alt='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.' /> <br /> Fri, 27 Jan 2023 16:10:00 GMT David Marquis https://www.erdc.usace.army.mil/Media/News-Stories/Article/3280392/erdc-releases-new-data-sheet-for-identifying-ordinary-high-watermarks/ Water Resources Infrastructure Water Safety U.S. Army Corps of Engineers Engineer Research and Development Center