Crescent City, California, faces unique geographical challenges that make it particularly susceptible to tsunamis. Its low elevation and the distinct crescent shape of its bay significantly amplify the intensity of incoming waves. Furthermore, the Mendocino fracture zone, an underwater irregularity, is believed to direct wave energy towards this community. Historically, since the installation of its first tide gauge in 1933, the town has experienced over 30 tsunamis, with geological and indigenous oral histories indicating a much longer history of such events along the Northern California coast.
The dawn of March 28, 1964, brought a catastrophic tsunami to Crescent City, triggered by a magnitude 9.2 Alaskan earthquake. Initial, smaller waves caused minimal damage, leading to a false sense of security. However, the fourth wave, preceded by the dramatic receding of the harbor, surged to a staggering 21 feet, engulfing the downtown area. This immense force claimed 11 lives, injured 24 others, and laid waste to 29 city blocks, effectively leveling two-thirds of the town. With an estimated damage exceeding $14 million (over $140 million in 2025 values), this event remains the most destructive tsunami ever recorded on the United States Pacific Coast.
In the aftermath of the 1964 disaster, Crescent City embarked on an immediate and extensive rebuilding effort. The land between Front Street and the Pacific Ocean was raised by 10 feet and redeveloped into Beachfront Park, largely replacing the 19th-century logging town. The Army Corps of Engineers reinforced the jetty with wave-dissipating concrete dolosse. A testament to the town's determination, the Tsunami Walking Tour was established. This tour comprises nine double-sided panels, with one side reflecting on the 1964 tragedy and the other providing crucial preparedness information for future events.
The didactic panels of the Tsunami Walking Tour delve into various aspects of the disaster and the subsequent recovery. They highlight the transformation of the waterfront park and the critical role of Army Corps interventions. The tour also sheds light on the inadequacies of civil defense systems at the time and recounts the tragic rescue attempt that accounted for nearly half of the fatalities. Complementing these panels, numerous informative signs from the National Park Service can be found nearby, particularly towards the southern boundary of the Redwood National and State Parks.
The Tsunami Walking Tour begins just south of the Crescent City Cultural Center. A comprehensive downloadable guide is available, providing detailed information about the tour. Each panel features a map of the walking trail and includes QR codes that offer access to supplemental audio, video, and historical images, enriching the visitor's understanding of this significant site.