Data Summaries

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

Bar graph showing the number of arrivals to all California ports between January to June of 2023 separated by vessel type. Tankers accounted for more than 1500 arrivals, followed by container ships with about 1400 and bulk vessels with approximately 700; the rest of the vessel types had less than 500 arrivals during this period.

The number of arrivals per vessel type at all California ports during the first two quarters of 2023.

By Port

Bar graph showing the number of arrivals to all California ports between January to June 2023 by port. Los Angeles and Long Beach Port complex received more than 2000 arrivals followed by San Francisco with approximately 750. Oakland, Carquinez and Richmond received less than 500 arrivals.

Number of arrivals at all California ports during the first two quarters of 2023.

By Region

Line graph showing the number of arrivals per month between January to June 2023 separated by Northern California and Southern California.

The number of arrivals per month during the first two quarters of 2023.

By Vessel Type

Bar graph showing the total volume discharged in California ports between January and June of 2023 by each vessel type. Bulk vessels have discharged approximately 2.3 million metric tons of ballast water, followed by tankers with approximately 2 million metric tons. All the other vessel types discharged less than 0.5 million metric tons.

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

Bar graph showing the total volume discharged in California ports between January and June of 2023 by port. Los Angeles/Long Beach port complex have received about 2 million metric tons of ballast water followed by Richmond with 1.2 million metric tons. Stockton and Carquinez received about 0.5 million metric tons respectively.

Total Ballast Water discharged at each California port during the first two quarters of 2023.

Historical Data

Total Arrivals 2010-2022

Bar graph showing total number of arrivals at all California ports since 2010 until 2022.

Total vessel arrivals 2010-2022

 

Total Arrivals by Region 2018-2022

Line graph showing the number of arrivals since 2018 separated by Northern California and Southern California.

Total vessel arrivals by region 2018-2022

 

Total Ballast Water Discharged 2010-2022

Bar graph showing total ballast water discharged in California ports since 2010 until 2022.

Total ballast water discharged 2010-2022

If you have questions or would like more information please email Lina Ceballos.

Contacts

Program Manager
Chris Scianni
562.499.6390
Chris.Scianni@slc.ca.gov

Ballast Water and Biofouling
Lina Ceballos Osuna
916.574.1864
Lina.Ceballos@slc.ca.gov

Raya Nedelcheva
916.574.2568
Raya.Nedelcheva@slc.ca.gov

Jonathan Thompson
916.574.2276
Jonathan.Thompson@slc.ca.gov

Recordkeeping/Administration
Jackie Mackay
562.499.6312
Jackie.Mackay@slc.ca.gov

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