Rivanna River at Palmyra, Fluvanna County VA (PYAV2)
Gage Location: Fluvanna County, VirginiaSite Location: Fluvanna County, Virginia
Latitude: 37.858Longitude: -78.266Elevation: 210.39 ft. MSLDrainage Area: 663 Sq. Mi.
Minor Stage: 17 ft. Moderate Stage: 25 ft.Major Stage: 32 ft.
First Flood: 1934-09-17Last Flood: 2014-05-16 Crest: 24.72 ft.Datum change: 1933-10-01Number of Floods: 115

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1934-09-1724.7524000MinorG1
1934-12-0120.613200MinorG1
1935-01-2320.1712800MinorG1
1935-09-0626.2729000ModerateG1
1936-01-0320.5413900MinorG1
1936-01-1919.5312400MinorG1
1936-03-1829.2639900ModerateG1
1936-10-1818.1910600MinorG1
1937-01-2119.6512500MinorG1
1937-02-2217.059330MinorG1
1937-04-2633.3556700MajorG1
1937-10-2023.4520000MinorG1
1940-08-1721.7816300MinorG1
1942-08-0918.5911400MinorG1
1942-10-1636.578000MajorG1
1944-09-1930.539600ModerateG1
1948-04-0121.5416800Minornone
1948-08-0422.919800Minornone
1948-12-0426.7828800Moderatenone
1948-12-3118.2710700Minornone
1949-03-2319.2511900Minornone
1949-08-1521.717200Minornone
1950-12-0521.5517000Minornone
1951-06-1021.1315900Minornone
1952-02-0417.3811000Minornone
1952-03-1217.811400Minornone
1955-08-192934800Moderatenone
1959-10-0120.4115700Minornone
1960-02-1918.2712700Minornone
1961-04-1317.8312100Minornone
1961-10-2124.2722900Minornone
1962-03-1317.912200Minornone
1963-03-1218.6313100Minornone
1965-02-0821.7718000Minornone
1967-03-0818.4112800Minornone
1969-06-0818.6513000Minornone
1969-08-2039.8586000Majornone
1971-05-3123.3921000Minornone
1971-10-2518.4612600Minornone
1972-02-1418.7612900Minornone
1972-06-2237.3473400Majornone
1972-10-0631.0745800Moderatenone
1972-11-1517.3211300Minornone
1973-02-0221.0716000Minornone
1973-12-2120.3214900Minornone
1975-03-2026.3828100Moderatenone
1975-09-2623.4620300Minornone
1976-01-0118.9913200Minornone
1976-01-2817.5811500Minornone
1976-10-1022.4118100Minornone
1978-01-0920.0714700Minornone
1978-01-2623.5120800Minornone
1978-05-1418.6312800Minornone
1979-01-2517.2911200Minornone
1979-02-2623.5821000Minornone
1979-06-0322.6418800Minornone
1979-09-0625.525800Moderatenone
1979-09-2224.4523100Minornone
1980-04-0917.1911000Minornone
1982-02-0318.2712300Minornone
1982-05-2818.3112300Minornone
1982-06-1419.5313800Minornone
1983-04-0322.0217300Minornone
1983-04-1121.8717000Minornone
1983-04-2420.213800Minornone
1984-02-1524.4222800Minornone
1984-03-2923.7621200Minornone
1984-04-0518.111200Minornone
1985-08-1919.5712900Minornone
1985-11-0526.5331800Moderatenone
1987-04-1725.5928700Moderatenone
1987-09-0926.6532200Moderatenone
1989-05-0626.3331100Moderatenone
1989-07-1619.9214600Minornone
1990-05-2718.7312700Minornone
1990-10-2421.9418500Minornone
1991-01-1219.7514300Minornone
1992-04-2223.7723200Minornone
1992-11-2421.1416800Minornone
1992-12-1119.3713700Minornone
1993-03-0526.2530800Moderatenone
1993-04-1717.1110500Minornone
1993-11-2822.4819800Minornone
1994-02-2418.312000Minornone
1994-03-2820.9316400Minornone
1995-01-1619.2413500Minornone
1995-06-2717.5811100Minornone
1995-06-2919.3613700Minornone
1996-01-2025.0327000Moderatenone
1996-01-2717.9311600Minornone
1996-09-0731.5450900Moderatenone
1998-01-2921.9718500Minornone
1998-02-0518.4512200Minornone
1998-02-1823.9623800Minornone
1998-03-2118.7512700Minornone
1998-05-0821.2817100Minornone
1999-09-3023.3122700Minornone
2003-02-2323.7923275Minornone
2003-03-2120.6815970Minornone
2003-07-0321.3217687Minornone
2003-09-1925.9130000Moderatenone
2003-12-1119.5914400Minornone
2004-09-0917.9812200Minornone
2004-09-2918.3912600Minornone
2005-01-1420.7816800Minornone
2005-11-3019.5314300Minornone
2006-10-0719.0913500Minornone
2010-01-2623.5223300Minornone
2011-03-1117.7920400Minornone
2011-04-1719.7114600Minornone
2011-05-1819.1923300Minornone
2011-12-0819.4614100Minornone
2013-01-3119.3313900Minornone
2014-05-0121.518400Minornone
2014-05-1624.7226500Minornone



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