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Water-Year Summary for Site 02335700

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00045 Precipitation(Sum)  
00045 Precipitation(Sum) [Operational]  
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2019: 2018-10-01 to 2019-09-30
 

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USGS Water-Year Summary 2019
02335700 BIG CREEK NEAR ALPHARETTA, GA
LOCATION - Lat 34°03'02", long 84°16'10" referenced to North American Datum of 1983, Fulton County, GA, Hydrologic Unit 03130001, on right bank at downstream side of bridge on Kimball Bridge Road, 2.6 miles southeast of Alpharetta, and 9.4 miles upstream from mouth.
DRAINAGE AREA - 72 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE : May 1960 to current year.
GAGE HEIGHT : October 1998 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 960.80 feet above National Geodetic Vertical Datum (NGVD) of 1929 (levels by U.S. Soil Conservation Service).
COOPERATION - Southern Company.
REMARKS -
For period 10/01/2013-12/14/2017: Discharge record fair, except for days of estimated discharge, which are poor. Gage height record fair.
For period 12/15/2017-11/07/2018: Discharge record fair. Gage height record good.
For period 11/08/2018-02/05/2019: Discharge record good. Gage height record good.
For period 02/06/2019-08/07/2019: Discharge record fair. Gage height record good.
For period 08/08/2019-10/17/2019: Discharge record fair, except for days of estimated discharge, which are poor. Gage height record fair.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 6,100 cfs, February 3, 1982; maximum gage-height recorded 13.05 feet, February 3, 1982; minimum daily discharge, 1.7 cfs, July 22, 1986.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - April 2002 to July 2010, September 2013 to current year.
INSTRUMENTATION - Tipping-bucket raingage.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 2016 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: April 2016 to current year.
REMARKS -
For period 04/28/2016-12/13/2018: Water temperature record is rated good.
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum recorded, 27.1°C, July 21, 26, 2016; minimum recorded, 0.6°C, January 5, 2018.