Seneca Creek at Dawsonville, Montgomery County MD (DAWM2)
Gage Location: Montgomery County, MarylandSite Location: Montgomery County, Maryland
Latitude: 39.128Longitude: -77.336Elevation: -9999 ft. MSLDrainage Area: 101 Sq. Mi.
Minor Stage: 7.5 ft. Moderate Stage: 11 ft.Major Stage: 16 ft.
First Flood: 1933-08-24Last Flood: 2014-05-16 Crest: 10.94 ft.Datum change: 2011-09-08Number of Floods: 58

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1933-08-2410.39300MinorC1 G1
1942-10-168.313620MinorC1
1943-11-097.522660MinorC1
1946-06-027.732940MinorC1
1952-09-017.772810MinorC1
1952-11-229.787330MinorC1
1955-08-137.62620MinorC1
1956-07-2112.1715000ModerateC1
1957-12-218.353640MinorC1
1961-06-107.983070MinorC1
1964-01-097.512520MinorC1
1965-08-267.622640MinorC1
1966-09-148.123270MinorC1
1967-08-277.642660MinorC1
1969-09-048.263490MinorC1
1971-09-1216.3225900MajorC1
1972-06-2216.426100MajorC1
1973-09-147.943020MinorC1
1973-12-267.953160MinorC1
1975-09-2612.6716000ModerateC1
1976-01-018.944900MinorC1
1976-10-098.423770MinorC1
1978-01-269.967850MinorC1
1979-09-0612.6916000ModerateC1
1979-10-0110.9510800MinorC1
1982-06-138.023160MinorC1
1983-04-108.093260MinorC1
1984-03-297.923010MinorC1
1985-02-128.333620MinorC1
1987-09-098.964950MinorC1
1988-05-199.817410MinorC1
1989-05-0610.098250MinorC1
1990-10-239.035120MinorC1
1993-04-168.153350MinorC1
1993-11-2810.379160MinorC1
1996-06-1811.0111000ModerateC1
1996-10-198.493880MinorC1
1998-03-219.095280MinorC1
1999-09-167.953060MinorC1
2001-08-128.013140MinorC1
2002-05-279.264310MinorC1
2003-09-2310.527130MinorC1
2003-12-1110.46810MinorC1
2005-07-088.833750MinorC1
2006-06-2610.296530MinorC1
2006-11-179.995790MinorC1
2008-05-128.743660MinorC1
2009-05-267.652650MinorC1
2009-12-267.982930MinorC1
2011-09-0815.7824400Moderatenone
2011-10-138.32890Minornone
2011-12-077.942900Minornone
2012-10-3111.138920Moderatenone
2013-01-3111.358280Moderatenone
2013-06-108.643230Minornone
2014-03-308.022690Minornone
2014-04-3010.616220Minornone
2014-05-1610.947040Minornone



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