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USGS 02236125 ST. JOHNS RIVER AT ASTOR, FL

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text

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 Available Period
  
2007-12-13  2016-09-30
1995-10-01  2025-09-27
2007-10-01  2025-09-27
2007-12-13  2016-09-30
2008-07-11  2016-09-30
2010-10-01  2025-09-27
2008-07-11  2015-09-30
2007-10-01  2025-09-26
2025-05-30  2025-09-27







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Discharge, cubic feet per second
Most recent instantaneous value: 6570 09-27-2025   14:30 EDT
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Daily discharge, cubic feet per second -- statistics for Sep 27 based on 31 water years of record more
Min
(2010)		 25th
percen-
tile		 Median Mean Most Recent
Instantaneous
Value Sep 27		 75th
percen-
tile		 Max
(2004)
1580 2990 5070 5550 6570 7680 12100

Gage height, feet
Most recent instantaneous value: 2.13 09-27-2025   14:30 EDT
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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter
 
-- Data temporarily unavailable for the time period specified --

Stream water level elevation above NAVD 1988, in feet
Most recent instantaneous value: 1.02 09-27-2025   14:30 EDT
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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)
 
-- Data temporarily unavailable for the time period specified --

Discharge, tidally filtered, cubic feet per second
Most recent instantaneous value: 6660 09-26-2025   03:00 EDT
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Mean water velocity for discharge computation, feet per second
Most recent instantaneous value: 0.71 09-27-2025   14:30 EDT
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