James River near Richmond, Henrico County VA (RMDV2)
Gage Location: Henrico County, Virginia	Site Location: Henrico County, Virginia
Latitude: 37.563	Longitude: -77.547	Elevation: 98.82 ft. MSL	Drainage Area: 6753 Sq. Mi.
Minor Stage: 12 ft.	Moderate Stage: 15 ft.	Major Stage: 22 ft.
First Flood: 1816-09-18	Last Flood: 2013-05-10 Crest: 15 ft.	Datum change: 1934-10-09	Number of Floods: 171

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Year Before Datum Change	Number of Floods

Year After Datum Change	Number of Floods
1934	1
1935	2
1936	4
1937	5
1938	0
1939	1
1940	2
1941	0
1942	3
1943	0
1944	1
1945	1
1946	1
1947	0
1948	5
1949	3
1950	3
1951	2
1952	2
1953	2
1954	1
1955	2
1956	0
1957	1
1958	1
1959	1
1960	2
1961	2
1962	2
1963	1
1964	0
1965	1
1966	1
1967	1
1968	0
1969	1
1970	1
1971	3
1972	5
1973	5
1974	1
1975	3
1976	2
1977	1
1978	4
1979	7
1980	2
1981	0
1982	2
1983	4
1984	2
1985	2
1986	0
1987	4
1988	0
1989	2
1990	2
1991	2
1992	1
1993	5
1994	3
1995	3
1996	4
1997	0
1998	5
1999	0
2000	1
2001	0
2002	0
2003	7
2004	4
2005	3
2006	3
2007	3
2008	0
2009	3
2010	2
2011	4
2012	3
2013	3

Codes and description

C1|Crest information looks unreliable and incomplete and not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information looks reliable despite potential problems. This data was used in frequency calculations.
C3|Crest height estimated by the USGS.
C4|Crest height is from the National Weather Service.
C5|Crest height affected by backwater.
C6|Crest occurred at a previous flood stage that is lower than the current flood stage. The crests below the new flood stage are not used in flood frequency calculations.
C7|Crest from USGS yearly peak and/or date is different than the crest we provide. In many cases MARFC uses crest based on backwater or ice effects.
C8|Crest month or day of occurrence has been estimated by The Middle Atlantic River Forecast Center usually based on nearby gage information.
C9|Crest date (day) in the month is unknown.
F1|Flow is an estimate.
F2|Flow affected by regulation or diversion and in some cases to an unknown degree.
F3|Flow effected by snow-melt, ice jam or debris jam break up.
F4|Flow affected by dam failure.
F5|Flow - All or part of the record affected by urbanization, mining, agricultural changes, channelization or other factors.
G1|Gage height at a different site and/or datum.
G2|Gage is not an official USGS gage with crests provided by the NWS. Crest information looks unreliable and incomplete and not used in flood frequency calculations.
G3|Gage datum changed during this year.
none,No code; Good Data

Updated: 09:51 AM May 13, 2013