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USGS 02236125 ST. JOHNS RIVER AT ASTOR, FLA.

 

PROVISIONAL DATA SUBJECT TO REVISION
 
 
 

LOCATION.--Lat 29°10'00", long 81°31'20", in NW1/4 sec.29, T.15 S., R.28 E., Lake County, Hydrologic Unit 03080101, near center of channel on bridge pile under State Highway 40 bridge over the St. Johns River, 6.6 mi west of U.S. Highway 17 and 127 mi upstream from mouth.

DRAINAGE AREA.--3,330 sq.mi.

PERIOD OF RECORD.--September 1931 to July 1934 (daily gage heights and miscellaneous discharge measurements only), February 1994 to current year.

GAGE.--Water-stage recorder, acoustic velocity meter and data-collection platform. Datum of gage is at NGVD of 1929.


  
 

(1-31) 		 

Gage height, feet
Most recent value: 2.47   11-19-2004  08:00
Graph of Gage height, feet
Download a presentation-quality graph Parameter Code 00065; DD 01

Discharge, cubic feet per second
Most recent value: 6,000   11-19-2004  08:00
Graph of Discharge, cubic feet per second
Download a presentation-quality graph Parameter Code 00060; DD 06
Daily mean flow statistics for 11/19 based on 9 years of record in ft3/sec
Current Flow Minimum Mean Maximum 80 percent exceedance 50 percent exceedance 20 percent exceedance
6,000  1,700 5,208 9,550 2,570 3,310 8,280

Percent exceedance means that 80, 50, or 20 percent of all daily mean flows for 11/19 have been greater than the value shown.
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Retrieved on 2004-11-19 12:07:22 EST
Department of the Interior, U.S. Geological Survey
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