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: August 4, 2023.
By Vessel Type
The number of arrivals per vessel type at all California ports during the first two quarters of 2023.
By Port
Number of arrivals at all California ports during the first two quarters of 2023.
By Region
The number of arrivals per month during the first two quarters of 2023.
By Vessel Type
Total Ballast Water Discharged in California waters during the first two quarters of 2023. Vessel types with less than 0.1 MMT were removed from the graph.
By Port
Total Ballast Water discharged at each California port during the first two quarters of 2023.
Historical Data
Total Arrivals 2010-2022
Total vessel arrivals 2010-2022
Total Arrivals by Region 2018-2022
Total vessel arrivals by region 2018-2022
Total Ballast Water Discharged 2010-2022
Total ballast water discharged 2010-2022
If you have questions or would like more information please email Lina Ceballos.
