Question 456Navigation General

The correct answer is C) U.S. Army Corps of Engineers. The U.S. Army Corps of Engineers is responsible for maintaining and monitoring the controlling depths in major navigable channels and waterways. They conduct regular surveys to assess any changes in depth and work to dredge and maintain these channels to ensure safe navigation. Other agencies like the National Geospatial-Intelligence Agency, National Ocean Service, and U.S. Coast Guard may provide supporting data and information, but the primary authority for changing or reporting on controlling depths lies with the U.S. Army Corps of Engineers.