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USGS 02236125 ST. JOHNS RIVER AT ASTOR, FL

PROVISIONAL DATA SUBJECT TO REVISION

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This gage is monitored in cooperation with the St. Johns River Water Management District.

Link to the St. Johns River Water Management District.

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.

REMARKS.--Computed discharge at this station may differ from individual measurements because of changes in tidal influence, wind, or other factors.

Available Parameters Period of Record
All 8 Available Parameters for this site
  
00010 Temperature, water(Max.,Min.,Mean) 2007-12-13  2016-09-30
00060 Discharge(Mean) 1994-02-10  2017-12-10
00065 Gage height(Mean) 1931-09-01  2017-12-10
00095 Specific cond at 25C(Max.,Min.,Mean) 2007-12-13  2016-09-30
00300 Dissolved oxygen(Max.,Min.,Mean) 2008-07-11  2016-09-30
63160 Stream level, NAVD(Mean) 2010-10-01  2017-12-10
63680 Turbidity, Form Neph(Mean) 2008-07-11  2015-09-30
72137 Discharge,tide fltrd(Mean) 1994-02-13  2017-12-08

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