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: 2014-03-30 Crest: 8.02 ft.Datum change: 2011-09-29Number of Floods: 56

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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



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: 04:58 AM Mar 31, 2014