The Division of Boating and Waterways (DBW) funds coastal and estuarine oceanography, studies to improve boating facility, beach erosion, restoration design, and boating and maritime safety and access. DBW also supports climate change data collection and studies. Studies include anti-fouling paints and the Southern California Beach Process Study (SCBPS). The division contributes to the funding of Coastal Data Information Program (CDIP) efforts to monitor, model, and forecast ocean swell and coastal wave heights using long-term data collection; information used by recreational boaters, commercial fishing and shipping industries, the military, and ocean enthusiasts; develop a beach-change forecasting model in the SCBPS. For more detailed information, please visit CDIP.


DBW contributes to the funding of the CDIP, which is an extensive network for monitoring waves and beaches along the coastlines of the United States. Since its inception in 1975, the program has produced a vast database of publicly-accessible environmental data for use by coastal engineers and planners, scientists, mariners and marine enthusiasts. The program has also remained at the forefront of coastal monitoring, developing numerous innovations in instrumentation, system control and management, computer hardware and software, field equipment and installation techniques.

To view informational documents regarding wave measurement, instrumentation, data acquisition, data processing, data management and more, please visit CDIP's document webpage.

Weather, Tides & Maps

San Francisco Clean Boating Map
Produced by the City and County of San Francisco Department of the Environment, and the California Division of Boating and Waterways, the California Coastal Commission’s Boating Clean & Green Program.

Sacramento - San Joaquin Delta Recreational Boating Map
Produced by the Keep the Delta Clean program with the California Division of Boating and Waterways, and the California Coastal Commission.