Lori Dengler, a geology professor and director of the Humboldt Earthquake Education Center at Humboldt State, said the damage estimates were preliminary — and were likely to rise.
Officials at harbors up and down the coastline spent Saturday assessing damage from Friday's ocean surge.
The two ports that were hit hardest were Crescent City and Santa Cruz.
The damage in Santa Cruz is estimated at $17 million, according to Port Director Lisa Ekers. She told the Santa Cruz Sentinel that 17 ships were sunk and up to 50 others were damaged.
In Santa Barbara, fierce waves turned the harbor into a tidal pool, sweeping away a barge that was used for the city's commercial fishing operation and nearly destroying a 200-ton crane barge that became unmoored in the tumult.
"The whole harbor entrance was kind of chaotic for about five hours," said Santa Barbara Patrol Officer Ryan Kelly. He said several boats were damaged when they collided with barges or other vessels.
In Ventura, a city sailing dock broke off and at least one boat was lost at sea, authorities said.
In Morro Bay, a dock came loose in the waves, according to Harbor Patrol Officer Cale Moore. He said the waves continued Saturday.
The National Weather Service cancelled its tsunami warning Saturday morning but warned that strong currents remain in Crescent City and in Santa Monica Bay.
On Friday, Gov. Jerry Brown declared a state of emergency in the counties of Del Norte, Humboldt, San Mateo and Santa Cruz.
Times staff writer Maria La Ganga in Crescent City contributed to this report.