Swatara Creek near Hershey, Dauphin County PA (HERP1)
Gage Location: Dauphin County, PennsylvaniaSite Location: Dauphin County, Pennsylvania
Latitude: 40.298Longitude: -76.668Elevation: 325.94 ft. MSLDrainage Area: 483 Sq. Mi.
Minor Stage: 7 ft. Moderate Stage: 10 ft.Major Stage: 14 ft.
First Flood: 1975-09-27Last Flood: 2014-05-01 Crest: 7.08 ft.Datum change: 1975-09-27Number of Floods: 47

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1975-09-2715.3629400Majornone
1976-01-279.4414000Minornone
1976-10-109.1813400Minornone
1977-03-057.159170Minornone
1977-12-217.59870Minornone
1978-01-279.1913400Minornone
1978-03-278.2111340Minornone
1979-01-227.129110Minornone
1979-01-2514.4326600Majornone
1979-02-268.9412900Minornone
1983-04-169.4513700Minornone
1983-12-147.699970Minornone
1984-05-307.198960Minornone
1986-03-157.39180Minornone
1987-09-147.8510300Minornone
1988-05-208.0210600Minornone
1989-05-077.359280Minornone
1989-05-178.3311300Minornone
1993-11-2910.3316500Moderatenone
1993-12-067.6210200Minornone
1996-01-2014.326000Majornone
1996-01-289.1113500Minornone
1996-10-208.0811200Minornone
1996-12-147.369640Minornone
2000-03-22811000Minornone
2000-12-187.329560Minornone
2003-12-127.519970Minornone
2004-09-1914.2726000Majornone
2004-09-297.018880Minornone
2005-01-157.018880Minornone
2005-03-297.519970Minornone
2005-04-038.0111100Minornone
2006-06-2916.1231700Majornone
2006-10-297.058970Minornone
2006-11-177.199280Minornone
2007-03-038.3711500Minornone
2008-03-0611.0617400Moderatenone
2008-12-127.18800Minornone
2010-10-017.639890minornone
2011-03-077.449490Minornone
2011-03-1210.9717200Moderatenone
2011-04-178.3411400Minornone
2011-09-0827.2296900Majornone
2011-09-287.49390Minornone
2011-11-237.168920Minornone
2013-10-117.549700Minornone
2014-05-017.088760Minornone



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