The Marine Invasive Species Program monitors and analyzes vessel arrival patterns at all California ports. Staff obtains arrivals data from the Marine Exchanges of Southern California and the San Francisco Bay Region and ballast water data from the vessel-submitted reporting forms.
Data is updated quarterly.
Last update: February 27, 2023.
Total Arrivals 2010-2022
Total Arrivals by Region 2018-2022
Total Ballast Water Discharged 2010-2022
If you have questions or would like more information please email Lina Ceballos.