The NBIC has been receiving ballast water reporting forms from commercial vessels that arrive to U.S. ports from overseas since July 1, 1999. Federal law (
Note: All data available in graphs and tables extend through the last complete month and are refreshed monthly. As ballast water management reports may be amended, corrected or changed during quality control processes, particularly within the 20 days from arrival date for the last complete month, this will result in updates that will register when the data are next refreshed. All data are subject to change and use of any of the NBIC data implies agreement with the NBIC Data Use Agreement policy. Cite our data.
BW Discharge
Check out patterns of ballast water discharge across the United States and through time.
BW Management
Find out how ballast water is being managed and treated over time and by ship type.
Ship Arrivals
Explore the number of ship arrivals by region and by ship type over time.
Shipping and Invasions Dynamics
View the cumulative number of invasions over time by types of vectors.