USGS Water-Year Summary for Site 02344500

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	Available Parameters
	00060 Discharge(Mean)
	00065 Gage height(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

02344500 FLINT RIVER NEAR GRIFFIN, GA

LOCATION - Lat 33°14'39", long 84°25'45" referenced to North American Datum of 1983, Spalding County, GA, Hydrologic Unit 03130005, at downstream side of bridge pier on GA 16, 1.5 miles downstream from Shoal Creek, 5.5 miles upstream from Line Creek, 10.0 miles west of Griffin, and at river mile 304.4.

DRAINAGE AREA - 272 mi².

REVISIONS HISTORY - Revisions were made to gage heights assigned to measurements 766 and 767 based on revisions made to reference gage readings on those accompanying days. Revisions to reference gage readings were made based on levels performed on 05/27/21.

SURFACE-WATER RECORDS

PERIOD OF RECORD -
DISCHARGE: March 1937 to current year.
GAGE HEIGHT: October 1998 to current year.

GAGE -

Satellite transmitter with a water-stage recorder. Datum of gage is 711.37 feet above National American Vertical Datum (NAVD) of 1988 (Level II GNSS survey).

Prior to August 25, 1938, a non-recording gage was located at present site at a datum 3.00 feet higher. From August 25, 1938, to May 5, 1941, a non-recording gage was located at the site and from May 6, 1941 to August 20, 1959, a water-stage recorder was located at the site. From August 21, 1959 to September 13, 1960, a non-recording gage was located at the site. All gage installations were located at present site and datum.

COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.

REMARKS - Gage-height records are generally good. Discharge records are generally good except for estimated discharges, which are poor. Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-ga_nwisweb_data_inquiries@usgs.gov.

Some diurnal fluctuation occurs at low flow.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of March 14 or 15, 1929, reached a stage of 17.9 feet, present datum, from flood marks located by local resident, discharge, 15,300 cfs.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge recorded, 32,500 cfs, from rating curve extended above 18,000 cfs on basis of velocity-area and flow-over-road measurement of peak flow, July 6, 1994; maximum gage height recorded, 24.22 feet, from floodmarks, July 6, 1994; minimum daily discharge, 0.79 cfs, July 2, 1988.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - May 10, 2001 to September 30, 2005.

INSTRUMENTATION - Tipping-bucket raingage.