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Due to a lapse in government funding,
the majority of USGS websites will not be updated except to provide important public safety information.
Websites displaying real-time water data will be updated with limited support.
For more information please see
www.doi.gov/shutdown.
Explore the NEWUSGS National Water Dashboard
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This page is undergoing modernization and will be decommissioned in the future.
Daily data are now available in WDFN.
Try it out and tell us what you think at wdfn@usgs.gov
USGS 02246518 POTTSBURG CRK AT US90 NR S. JACKSONVILLE, FL
Data are tidally affected -- Astronomical tides cause
significant cycles of approximately 24.84 hours at this site.
Because a different portion of the 24.84-hour tidal cycle is
averaged in successive daily (24-hour) computations, a systematic
secondary oscillation, unrelated to basin hydrology and having a
period of about two weeks may be apparent in daily data.