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
MonthNumber
of
Floods
After
Datum
Number
of
Floods
Total
Cumulative
Total
After
Datum
Cumulative
Total
January5555
February0055
March661111
April221313
May221515
June121617
July001617
August001617
September442021
October112122
November112223
December222425

Seasonal Totals
Winter (Dec-Jan-Feb)7
Spring (Mar-Apr-May)10
Summer (Jun-Jul-Aug)2
Fall (Sep-Oct-Nov)6




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