Schuylkill River at Philadelphia, Philadelphia County PA (PADP1)
Gage Location: Philadelphia County, Pennsylvania	Site Location: Philadelphia County, Pennsylvania
Latitude: 39.968	Longitude: -75.189	Elevation: 5.74 ft. MSL	Drainage Area: 1893 Sq. Mi.
Minor Stage: 11 ft.	Moderate Stage: 13 ft.	Major Stage: 15.5 ft.
First Flood: 1769-09-08	Last Flood: 2011-09-08 Crest: 12.52 ft.	Datum change: 1931-10-01	Number of Floods: 64

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1769-09-08 -9999 -9999 Missing *** 1775-09-03 -9999 -9999 Missing *** 1846-10-13 -9999 -9999 Missing *** 1869-10-04 17 135000 Major *** (E) 1878-10-24 -9999 -9999 Missing *** 1882-09-24 -9999 -9999 Missing *** 1902-03-01 14.8 98000 Moderate *** (E) 1933-08-24 14.7 96200 Moderate none 1934-09-30 11.3 44800 Minor none 1935-07-09 14.1 82000 Moderate none 1936-01-03 11.7 49600 Minor none 1936-03-12 11.62 48400 Minor none 1939-02-03 11.08 42400 Minor none 1940-03-04 11.23 43600 Minor none 1940-03-15 11.72 49600 Minor none 1942-05-24 12.44 61400 Minor none 1942-08-09 13.1 71500 Moderate none 1942-12-30 11.36 47800 Minor none 1943-11-09 11.19 45200 Minor none 1945-01-01 11.06 43900 Minor none 1945-09-19 11.92 54400 Minor none 1946-06-02 14.57 94600 Moderate none 1948-12-30 12 54400 Minor none 1950-11-25 14.32 89800 Moderate none 1952-04-28 11.92 53000 Minor none 1952-11-22 12.41 60300 Minor none 1952-12-11 11.7 50200 Minor none 1955-08-13 11.25 44200 Minor none 1955-08-19 14.32 90100 Moderate none 1960-09-12 11.58 51200 Minor none 1967-03-07 11.31 47500 Minor none 1970-04-02 11.11 45100 Minor (A) 1971-08-28 11.26 43900 Minor (A) 1971-09-13 13.28 70300 Moderate (A) 1972-06-23 14.65 103000 Moderate (A) 1973-06-29 11.43 50700 Minor (A) 1973-12-21 11.47 51300 Minor (A) 1976-01-28 12.13 61000 Minor (A) 1978-01-26 12.33 64000 Minor (A) 1979-01-25 12.97 74100 Minor (A) 1979-02-26 11.54 52300 Minor (A) 1983-04-16 11.42 50400 Minor (A) 1983-12-13 11.06 45500 Minor (A) 1984-05-30 11.42 50400 Minor (A) 1984-07-07 12.31 63400 Minor (A) 1993-12-05 12.41 62000 Minor (A) 1995-03-09 11.23 45100 Minor (A) 1996-01-19 13.36 79000 Moderate (A) 1996-10-19 11.86 54000 Minor (A) 1996-12-14 11.39 47200 Minor (A) 1999-09-17 14.1 92500 Moderate (A) 2000-03-22 11.04 42700 Minor (A) 2003-06-21 11.43 52500 Minor (A) 2004-09-18 11.33 51100 Minor (A) 2004-09-29 11.86 58500 Minor (A) 2005-04-03 11.74 56800 Minor (A) 2005-10-09 12.07 61500 Minor (A) 2006-06-28 12.51 68100 Minor (A) 2007-04-15 11.34 51200 Minor (A) 2010-10-01 13.05 76300 moderate none 2011-03-11 11.03 47100 Minor none 2011-08-28 13.56 83900 Moderate none 2011-09-07 12.01 60600 Minor none 2011-09-08 12.52 68200 Minor none

MARFC Codes
Code Description
(!!!) Datum changed during this year.
(1) Backwater Effect.
(2) 15.77 ft also occurred on 11/25/1950 but only counted as one flood.
(3) Estimated from currrent USGS rating table.
(4) Estimated height from the USGS.
(5) Gage height at a different site and/or datum
(6) Discharge affected by Regulation or Diversion
(7) Due to changes, prior floods were based on present flood stage. Therefore, flood data could possibly be incomplete.
(8) Gage is a staff gage and not the offical USGS gage. Therefore, some floods may be missing from our study.
(9) Discharge effected by snow-melt, ice jam or debris jam break up
(A) Discharge affected to unknown degree by regulation or diversion.
(B) Month or day of occurrence is unknown or not exact.
(C) All or part of the record affected by urbanization, mining, agricultural changes, channelization, or other factors.
(D) Crest height adjusted to current datum.
(E) Estimated discharge.
(F) Only annual maximum peak available for this year.
(O) This flood occurred at a previous flood stage that is lower than the current flood stage. This is only a historical flood.
** Crest information looks reasonable despite potential problems. This data was used in our study.
*** Crest information looks unreliable and incomplete and was not used in our flood frequency study.
**** Gauge was discontinued in 2004. 2004 and later was not used in our study.
none No code

Updated: 08:58 AM Jun 28, 2012