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



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: 08:00 PM May 28, 2014