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Water-Year Summary for Site 02339500

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Available Parameters
00045 Precipitation(Sum)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
02339500 CHATTAHOOCHEE RIVER AT WEST POINT, GA
LOCATION - Lat 32°53'11.9", long 85°10'53.7" referenced to North American Datum of 1983, Troup County, GA, Hydrologic Unit 03130002, on right bank just downstream from Oseligee Creek at West Point, 1.0 mile upstream from bridge on US 29, 2.5 miles downstream from West Point Dam and at mile 198.9.
DRAINAGE AREA - 3,550 mi².
REVISIONS HISTORY - WSP-682: 1920, drainage area; WSP-972: 1931-32; WSP-1504: 1912, 1916-17.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
DISCHARGE: August 1896 to current year.
GAGE HEIGHT: October 1998 to current year.
GAGE - Satellite telemetry with a water-stage recorder. Datum of gage is 551.67 feet above National Geodetic Vertical Datum (NGVD) of 1929. Prior to October 20, 1912, a non-recording gage was located at site 0.8 miles downstream at datum 2.83 feet lower. From October 20, 1912, to January 25, 1925, a non-recording gage was located at site 500 feet upstream at present datum.
COOPERATION - U.S. Army Corps of Engineers, Mobile District.
REMARKS -
For period 10/01/2013-06/05/2018: Discharge record fair, except for days of estimated discharge, which are poor. Gage height record good.
For period 06/06/2018-10/16/2018: Discharge record good. Gage height record good.
For period 10/17/2018-06/04/2019: Discharge record fair. Gage height record fair.
For period 06/05/2019-08/21/2019: Discharge record fair. Gage height record good.
For period 08/22/2019-01/08/2020: Discharge record poor. Gage height record good.
For period 01/09/2020-06/24/2020: Discharge record good. Gage height record good.
For period 06/25/2020-10/05/2020: Discharge record fair, except for days of estimated discharge, which are poor. Gage height record good.
For period 10/06/2020-12/16/2020: Discharge record poor. Gage height record fair.

Flow regulated by Lake Sidney Lanier since January 1956 and by West Point Lake since October 1974.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known since at least 1827, that of December 10, 1919. Flood in 1886 reached a stage of 25.6 feet at former site and datum, from flood marks by National Weather Service; corresponding discharge was 92,800 cfs.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 134,000 cfs, December 10, 1919, from rating curve extended above 80,000 cfs on basis of computation of peak flow over Landale Dam; maximum gage height, 30.00 feet (29.25 feet at present site),December 10, 1919, at site then in use, from floodmarks; minimum daily discharge, 224 cfs, September 12, 1925.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - June 10, 2003 to September 30, 2005.
INSTRUMENTATION - Tipping-bucket raingage.