James River at Buchanan, Botetourt County VA (BNNV2)
Gage Location: Botetourt County, Virginia	Site Location: Botetourt County, Virginia
Latitude: 37.531	Longitude: -79.679	Elevation: 802.9 ft. MSL	Drainage Area: 2073 Sq. Mi.
Minor Stage: 17 ft.	Moderate Stage: 21 ft.	Major Stage: 26 ft.
First Flood: 1877-10-03	Last Flood: 2013-05-08 Crest: 19.58 ft.	Datum change: 1927-07-10	Number of Floods: 74

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1877-10-03 -9999 -9999 Missing C1 1877-11-24 34.9 142000 Major C1 C8 1886-04-01 27 85000 Major C1 C9 1889-03-01 27 85000 Major C1 C9 1893-10-13 -9999 -9999 Missing C1 1895-04-09 19 49800 Minor C1 1899-03-05 19.5 51900 Minor C1 1900-11-26 21.4 59800 Moderate C1 1902-03-01 25 76000 Moderate C1 1903-03-24 17.5 43800 Minor C1 1907-06-14 17 41800 Minor C1 1908-02-16 19 49800 Minor C1 1913-03-27 31 105000 Major C1 1915-02-02 20 56100 Minor C1 1917-03-05 17.7 44600 Minor C1 1918-03-14 17.3 43000 Minor C1 1919-01-03 18.5 47800 Minor C1 1924-05-12 21.5 60000 Moderate C1 1935-01-23 23.82 70400 Moderate none 1936-03-18 26.8 84100 Major none 1937-01-21 17.12 41400 Minor none 1940-05-31 17 41100 Minor none 1942-05-17 19.56 52300 Minor none 1942-05-22 18.4 47400 Minor none 1948-12-04 17.15 42600 Minor none 1949-04-14 20.18 54800 Minor none 1950-12-08 18.95 49800 Minor none 1952-03-12 17.73 42000 Minor none 1953-02-22 19.15 48000 Minor none 1954-03-02 18.75 46400 Minor none 1955-03-07 19.36 48800 Minor none 1957-04-06 18.78 46400 Minor none 1960-03-31 18.45 44700 Minor none 1961-10-21 17.68 42000 Minor none 1963-03-13 22.3 61800 Moderate none 1967-03-08 20.77 55000 Minor none 1969-08-20 23.37 65800 Moderate none 1970-01-01 19.81 49500 Minor none 1971-02-14 18.9 45900 Minor none 1971-05-31 19.07 46600 Minor none 1972-02-27 18.52 44400 Minor none 1972-06-22 30.49 111000 Major none 1973-02-03 18.16 42900 Minor none 1973-03-18 19.23 47300 Minor none 1973-05-29 20.38 52900 Minor none 1973-12-27 24.17 73400 Moderate none 1975-03-20 17.93 42000 Minor none 1976-10-10 17 38300 Minor none 1977-04-06 22.81 66000 Moderate none 1978-01-27 22.31 63200 Moderate none 1978-03-15 18.87 45800 Minor none 1978-03-27 18.72 45200 Minor none 1979-02-25 19.91 50600 Minor none 1980-04-15 18.29 43500 Minor F2 1982-06-13 18.37 43400 Minor F2 1984-02-14 19.1 46700 Minor F2 1985-11-05 38.84 179000 Major F2 1987-04-16 24.81 76100 Moderate F2 1992-04-22 23.64 69900 Moderate F2 1993-03-05 20.6 54200 Minor F2 1995-01-16 22.7 64800 Moderate F2 1996-01-20 29.24 103000 Major F2 1996-12-02 18.79 45600 Minor F2 1998-01-09 19.95 51000 Minor F2 2003-02-23 24.03 72000 Moderate F2 2003-05-19 18.57 44600 Minor F2 2003-11-20 19.63 49515 Minor F2 2004-09-29 25.66 61200 Moderate F2 2006-06-26 18.72 37800 Minor F2 2006-06-28 21.98 48300 Moderate F2 2007-04-16 17.85 35100 Minor F2 2010-01-26 20.17 42400 Minor F2 2013-01-31 17.5 34100 Minor F2 2013-05-08 19.58 40500 Minor none

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: 09:52 AM May 13, 2013