Appomattox River at Matoaca, Chesterfield County VA (MTCV2)
Gage Location: Dinwiddie County, Virginia Site Location: Chesterfield County, Virginia
Latitude: 37.225Longitude: -77.475Elevation: 68.3 ft. MSLDrainage Area: 1342 Sq. Mi.
Minor Stage: 10 ft. Moderate Stage: 13 ft.Major Stage: 15 ft.
First Flood: 1971-05-31Last Flood: 2006-11-16 Crest: 10.29 ft.Datum change: 1969-10-30Number of Floods: 24

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1971-05-3110.710500MinorF2
1971-10-2314.1-9999ModerateF2
1972-06-2714.622800ModerateF2
1972-10-0718.3940800MajorF2
1975-03-1912.3115200MinorF2
1978-03-1211.9814200MinorF2
1979-02-2614.3722000ModerateF2
1979-10-0313.0917700ModerateF2
1983-03-2110.6110900MinorF2
1984-02-1612.6316200MinorF2
1985-11-0612.0714400MinorF2
1987-04-1812.0414300MinorF2
1993-03-0611.3212500MinorF2
1994-03-0411.112200MinorF2
1996-09-1211.1712300MinorF2
1998-03-2111.9714100MinorF2
1999-09-1611.5813100MinorF2
2003-03-2310.3710925MinorF2
2003-04-1110.1410535MinorF2
2003-05-2614.6125900ModerateF2
2003-09-2012.8716875MinorF2
2004-08-3113.5721800ModerateF2
2006-10-0910.7312900MinorF2
2006-11-1610.2911700MinorF2



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