Potomac River at Shepherdstown, Jefferson County WV (SHEW2)
Gage Location: Jefferson County, West VirginiaSite Location: Jefferson County, West Virginia
Latitude: 39.435Longitude: -77.801Elevation: 281 ft. MSLDrainage Area: 5939 Sq. Mi.
Minor Stage: 15 ft. Moderate Stage: 18 ft.Major Stage: 22 ft.
First Flood: 1889-06-01Last Flood: 2014-05-17 Crest: 20.5 ft.Datum change: 1889-01-01Number of Floods: 123

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1889-06-0139.2290000MajorC1
1924-05-1329.8168000MajorC1
1929-03-0715.4955600MinorC1
1929-04-1725.53126000MajorC1
1929-10-2319.8382400ModerateC1
1932-05-1424.75119000MajorC1
1933-04-2119.177800ModerateC1
1936-02-2819.2178400ModerateC1
1936-03-1316.5261700MinorC1
1936-03-1942.07335000MajorC1
1936-03-2216.964100MinorC1
1937-01-2316.1660000MinorC1
1937-04-2733.22207000MajorC1
1937-10-2926.78138000MajorC1
1939-02-0520.3686500ModerateC1
1939-04-1815.7557700MinorC1
1940-04-2117.7569400MinorC1
1940-06-0116.3561100MinorC1
1942-05-2418.9777100ModerateC1
1942-10-1632.68201000MajorC1
1942-12-3121.493500ModerateC1
1945-09-1919.3179000ModerateC1
1948-04-1518.4973800ModerateC1
1948-12-1716.964100MinorC1
1949-06-1919.8482300ModerateC1
1950-12-0519.580400ModerateC1
1950-12-091870600ModerateC1
1951-03-3115.2354300MinorC1
1951-06-1519.681000ModerateC1
1952-03-1217.8169400MinorC1
1952-04-2919.0977800ModerateC1
1952-11-2319.9883600ModerateC1
1954-03-0319.4780200ModerateC1
1954-10-172298000MajorC1
1955-03-2317.8369600MinorC1
1955-08-2025.26124000MajorC1
1957-02-1115.2854700MinorC1
1958-05-0715.8858100MinorC1
1960-04-0117.3366600MinorC1
1960-04-0517.3266600MinorC1
1960-05-1020.3586200ModerateC1
1961-02-2018.5774300ModerateC1
1961-02-2718.1771700ModerateC1
1962-03-2319.983000ModerateC1
1963-03-2121.191400ModerateC1
1964-03-0616.9464300MinorC1
1964-04-3018.372600ModerateC1
1965-03-0618.0771100ModerateC1
1966-02-1416.2360100MinorC1
1967-03-0822.54102000MajorC1
1968-03-1815.6957000MinorC1
1968-05-2915.2754700MinorC1
1970-04-0319.4580000ModerateC1
1970-12-2415.6857000MinorC1
1971-02-2417.8669800MinorC1
1972-02-2715.757100MinorC1
1972-06-2331.58187000MajorC1
1972-12-1017.0264800MinorC1
1972-12-2315.153800MinorC1
1973-04-2917.0665000MinorC1
1973-12-2819.5280600ModerateC1
1975-03-2122.1999400MajorC1
1975-09-2720.4987100ModerateC1
1975-10-1916.3761000MinorC1
1976-01-0218.3372700ModerateC1
1976-10-1025.31124000MajorC1
1977-04-0616.5762100MinorC1
1978-03-1620.8189400ModerateC1
1978-03-2718.1271800ModerateC1
1978-05-1718.1271800ModerateC1
1979-01-2516.5562200MinorC1
1979-02-2723.6110000MajorC1
1979-03-0715.5456200MinorC1
1982-03-1815.1253900MinorC1
1982-06-1416.6462700MinorC1
1983-04-2619.1778600ModerateC1
1984-02-1526.07131000MajorC1
1984-03-3019.2579100ModerateC1
1984-04-0619.9783800ModerateC1
1985-02-1315.0853600MinorC1
1985-11-0731.44187000MajorC1
1986-02-2015.354900MinorC1
1986-03-1621.4393700ModerateC1
1987-04-0516.5362100MinorC1
1987-04-1820.4486900ModerateC1
1988-05-0717.6368800MinorC1
1988-05-1918.1972300ModerateC1
1989-05-1716.260100MinorC1
1991-01-1816.1259600MinorC1
1991-03-2416.1159600MinorC1
1993-03-0522.1599100MajorC1
1993-03-2517.8670200MinorC1
1993-03-2915.6456800MinorC1
1993-04-0218.9677200ModerateC1
1993-04-1820.9790500ModerateC1
1993-11-2919.42-9999ModerateC1
1994-02-1116.3-9999MinorC1
1994-02-2516.2-9999MinorC1
1994-03-0916.8-9999MinorC1
1994-03-3118-9999ModerateC1
1996-01-2132.5-9999MajorC1
1996-01-2815-9999MinorC1
1996-09-0829-9999MajorC1
1996-12-0315-9999MinorC1
1998-01-0917.17-9999MinorC1
1998-02-0615.04-9999MinorC1
1998-02-1915.3-9999MinorC1
1998-03-2219.83-9999ModerateC1
1998-04-2115.65-9999MinorC1
2003-01-0316.57-9999MinorC1
2003-03-2216.73-9999MinorC1
2003-05-1215.5-9999MinorC1
2003-09-2019.83-9999ModerateC1
2003-12-1218.24-9999ModerateC1
2008-05-12-9999-9999MissingC1 G2
2009-05-05-9999-9999MissingC1 G2
2010-01-2618.2-9999ModerateC1 G2
2010-03-1522-9999MajorC1 G2
2011-03-1219.5-9999ModerateC1 G2
2011-04-17-9999-9999MissingC1 G2
2011-05-19-9999-9999MissingC1 G2
2012-10-3119-9999ModerateC1 G2
2014-05-1720.5-9999ModerateC1 G2



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