Swatara Creek at Middletown, Dauphin County PA (Old Site - MIDP1)
Gage Location: Dauphin County, Pennsylvania Site Location: Dauphin County, Pennsylvania
Latitude: 40.2Longitude: -76.717Elevation: 284 ft. MSL Drainage Area: 569 Sq. Mi.
Minor Stage: 11 ft. Moderate Stage: 14 ft.Major Stage: 16 ft.
First Flood: 1972-06-23Last Flood: 2011-09-09 Crest: 23.23 ft.Datum change: 1975-09-01Number of Floods: 25

Click on table headers to sort
MINOR FLOODS
Date of FloodCrest(ft)
1976-01-2713.47
1983-04-1713.5
1986-03-1612.14
1988-05-2212.2
1989-05-1712
1993-12-0611.5
1994-03-2811
1995-01-2011
1996-01-2813
2004-09-2911
2005-01-1511.3
2007-03-0311.9
2008-12-1311
2010-10-0111.2
2011-03-0811.2
MODERATE FLOODS
Date of FloodCrest(ft)
1993-11-2914
1996-01-2114
2008-03-0615
2011-03-1315.1
MAJOR FLOODS
Date of FloodCrest(ft)
1972-06-2328.45
1975-09-2719.47
2004-09-1919.5
2006-06-2820.6
2011-09-0923.23
MISSING
Date of FloodCrest(ft)



Categorical Floods by Month
MonthMinor
After
Datum
Minor
Total
Moderate
After
Datum
Moderate
Total
Major
After
Datum
Major
Total
Missing
After
Datum
Missing
Total
January44110000
February00000000
March44220000
April22000000
May22000000
June00001200
July00000000
August00000000
September11003300
October11000000
November00110000
December22000000


Categorical Floods by Season
SeasonMinorModerateMajorMissing
Fall2130
Winter6100
Spring8200
Summer0020


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: 08:09 AM Feb 08, 2013