NDC Navigational Notices

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US Army Corps of Engineers

Institute for Water Resources Website

NDC - Pre-Dredging Survey for Channel Availability

Navigation Notices

The Notices to Navigation Interests (NTNI) is a centralized point of access for mariners to find notices of maintenance projects, hazards, closures or restrictions, and other pertinent waterway information. This is the USACE site for data entry and includes policies issued by USACE Districts with a waterway navigation mission.

NDC

Locks

Dredging

Navigation Notices

WCSC

Notices to Navigation Interests (NTNI)

The current NTNI website and process was introduced in 2015 as a way to provide centralized and standardized navigational information primarily about USACE projects to the industry and the public. Notices are published periodically as the need arises. A variety of information is provided within notices including:

USACE work planned/in progress including maintenance dredging, lock maintenance, and work on jetties and breakwaters
Deliberate modifications to channel dimensions, including reductions in maintained depths, or changes in other significant project features
Section 10 permit work which may impact general navigation
Change in USACE issued navigation regulations
Special/temporary operating restrictions imposed by USACE
Information for correction of USACE charts
Advance notice of USACE chart revision publication of next edition
Changes or corrections to National Ocean Service-charted features

Other government agencies also post notices, including the U.S. Coast Guard and the National Oceanic and Atmospheric Administration.