Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Regional Hydrodynamic Model Outputs of the NOAA St. John's River Operational Forecast System (SJROFS)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2017-01-01T00:00:00.000+00:00
NOAA's National Ocean Service (NOS) has developed a St. John's River Operational Forecast System (SJROFS). The Environmental Fluid Dynamics Code (EFDC) has been used to perform operational nowcasts and forecasts for the Lower St. John's River. The EFDC model solves the three-dimensional, vertically hydrostatic, free surface, turbulent averaged equations of motions for a variable density fluid. The physics of the EFDC model and many aspects of the computation scheme are equivalent to the widely used Blumberg-Mellor model (POM). SJROFS is to produce hourly nowcasts and run every six hours four times daily forecasts of total water level and current velocity in the River to be used by the commercial and recreational maritime community.

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov