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US Army Corps of Engineers

Portland District Website

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Regulatory Notices

Notice of Availability of the Interim Draft of the National Ordinary High Water Mark Field Delineation Manual for Rivers and Streams

PORTLAND DISTRICT

Published Dec. 6, 2022

Expiration date: 12/6/2026

PRINT | E-MAIL

The U.S. Army Corps of Engineers (USACE) and EPA (the Agencies) jointly announce the availability of the Interim Draft of the National Ordinary High Water Mark Field Delineation Manual for Rivers and Streams (National OHWM Manual) and its accompanying data sheet.

Notice of Availability of the Interim Draft of the National Ordinary High Water Mark Field Delineation Manual for Rivers and Streams