Appomattox River at Mattoax, Chesterfield County VA (MTXV2)
Gage Location: Chesterfield County, Virginia Site Location: Amelia County, Virginia
Latitude: 37.421Longitude: -77.859Elevation: 174.51 ft. MSLDrainage Area: 725 Sq. Mi.
Minor Stage: 21 ft. Moderate Stage: 25 ft.Major Stage: 28 ft.
First Flood: 1901-05-25Last Flood: 2014-05-20 Crest: 25.09 ft.Datum change: 1936-10-01Number of Floods: 81

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1901-05-25-999913400MissingC1
1902-02-28-999912000MissingC1
1903-03-25-999910600MissingC1
1928-08-1525.9411200Moderatenone
1932-03-1022.56700Minornone
1934-03-0823.47800Minornone
1934-12-0423.668190Minornone
1936-03-2025.2710300Moderatenone
1937-01-0623.157540Minornone
1937-01-2222.947180Minornone
1937-04-2829.2720100Majornone
1937-10-2421.635480Minornone
1938-06-2424.218840Minornone
1938-07-2923.578060Minornone
1940-08-1835.335000Majornone
1943-02-0921.645700Minornone
1944-09-2325.310300Moderatenone
1945-09-2225.310300Moderatenone
1948-02-1823.17420Minornone
1948-12-0724.399100Minornone
1949-11-0422.096230Minornone
1951-12-2423.27540Minornone
1952-03-2821.225360Minornone
1952-11-2421.75800Minornone
1955-08-2126.5312100Moderatenone
1959-01-0222.266460Minornone
1960-02-2321.55610Minornone
1960-04-0922.226340Minornone
1961-10-2121.635700Minornone
1962-01-1022.847060Minornone
1971-06-0224.348970Minornone
1971-10-2732.326100Majornone
1972-06-2534.0831100Majornone
1972-10-0731.122400Majornone
1973-05-0123.68060Minornone
1973-12-2521.675770Minornone
1974-09-1023.818330Minornone
1975-03-1825.3610500Moderatenone
1975-03-2323.247540Minornone
1975-04-0222.556820Minornone
1975-07-1723.397800Minornone
1975-09-2925.6610900Moderatenone
1976-01-0422.286440Minornone
1978-01-1321.175360Minornone
1978-01-2827.7314000Moderatenone
1978-03-1425.3810500Moderatenone
1979-01-2522.546700Minornone
1979-02-2630.8421600Majornone
1979-09-0921.575700Minornone
1979-09-2524.068710Minornone
1979-10-0223.277630Minornone
1983-04-1923.818330Minornone
1984-02-1522.16230Minornone
1984-03-2924.89640Minornone
1984-04-01237300Minornone
1985-11-0726.6412300Moderatenone
1987-03-0521.475580Minornone
1987-04-1925.9611300Moderatenone
1993-03-0826.3811900Moderatenone
1993-12-0126.5412100Moderatenone
1993-12-0921.535750Minornone
1994-03-0624.599030Minornone
1994-04-0124.749240Minornone
1996-01-2322.426320Minornone
1996-09-1027.4913800Moderatenone
1998-02-0124.779280Minornone
1998-02-0823.397440Minornone
1998-02-2121.215580Minornone
1998-03-2225.8510900Moderatenone
2003-02-2621.945965Minornone
2003-03-2425.199900Moderatenone
2003-04-1322.546447Minornone
2003-09-2327.3313500Moderatenone
2006-10-1122.976940Minornone
2007-01-0523.87960Minornone
2009-11-1624.368710Minornone
2009-12-1422.076040Minornone
2009-12-1721.055460Minornone
2013-01-2121.045380Minornone
2014-05-0423.57990Minornone
2014-05-2025.0910200Moderatenone



Codes and description

C1|Crest information during this period may be incomplete and therefore was not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information during this period 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: 07:31 AM Dec 19, 2014