The U.S. Army Corps of Engineers (USACE), San Francisco District strongly encourages all visitors to Crescent City and its harbor to stay off the jetty, as various life-threatening and unexpected waves can sweep across the structure without warning causing severe injury up to and including death. Nature is unpredictable, and it is not worth risking your life. Don’t underestimate the force of the ocean that may look calm or a jetty that looks interesting. Avoid it completely to stay safe out there.
– A message from the USACE San Francisco District Safety Office