The NCOP collects, analyzes, and disseminates observations and predictions of tidal currents for over 2,700 locations throughout the United States. The NCOP conducts annual tidal current surveys in various locations which deploy current meters for 30-90 days to acquire enough data to generate accurate tidal current predictions. Main gaps: NOAA maintains tidal current predictions at approximately 2,750 locations. However, there are little historical data north of the Aleutian chain, and those data are very old.
Current speed and direction profiles.
US National Oceanic and Atmospheric Administration (NOAA)