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: 2013-01-21 Crest: 21.04 ft.Datum change: 1936-10-01Number of Floods: 79

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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



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: 07:20 AM Nov 12, 2013