USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

Gwinnett County, Georgia

Hydrologic Unit Code 03070103

Latitude 33°55'01", Longitude 83°53'17" NAD83

Drainage area 30.8 square miles

Contributing drainage area 30.8 square miles

Gage datum 785.51 feet above NAVD88

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
2001	2001-03-15	9.46	1,270^C
2002	2002-05-04	9.63	1,430^C
2003	2003-06-17	14.93	8,630^C
2004	2004-09-17	12.14	3,920^C
2005	2005-03-28	11.98	3,630^C
2006	2005-10-08	9.22	1,270^C
2007	2006-11-15	9.19	1,250^C
2008	2008-08-26	8.17	788^C
2009	2009-09-21	13.85	6,470^C
2010	2010-01-25	12.09	3,810^C
2011	2010-11-30	9.06	1,180^C
2012	2012-03-03	8.56	947^C
2013	2013-05-19	10.98	2,600^C
2014	2014-01-11	10.81	2,440^C
2015	2015-08-23	12.72	4,650^C
2016	2015-11-02	11.02	2,640^C
2017	2017-01-21	10.12	1,860^C
2018	2018-06-27	9.77	1,610^C
2019	2019-04-19	13.64	6,100^C
2020	2020-09-17	12.48	4,460^C,R
2021	2020-10-11	11.76	3,570^C,R
2022	2022-07-21	11.26	3,000^C
2023	2023-01-04	10.35	2,180^C

Peak Streamflow Qualification Codes.

C -- All or part of the record affected by Urbanization, Mining, Agricultural changes, Channelization, or other
R -- Revised

USGS 02208150 ALCOVY RIVER AT NEW HOPE ROAD, NEAR GRAYSON, GA