Penns Creek at Penns Creek, Union County PA (PNCP1)
Gage Location: Union County, Pennsylvania	Site Location: Snyder County, Pennsylvania
Latitude: 40.867	Longitude: -77.049	Elevation: 506.72 ft. MSL	Drainage Area: 301 Sq. Mi.
Minor Stage: 8 ft.	Moderate Stage: 10 ft.	Major Stage: 12 ft.
First Flood: 1933-08-24	Last Flood: 2011-09-08 Crest: 8.88 ft.	Datum change: 1930-02-01	Number of Floods: 73

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1933-08-24 11 11800 Moderate none 1934-03-05 8.32 5750 Minor none 1934-09-16 13 19800 Major none 1934-12-01 8.52 6010 Minor none 1936-03-11 10.9 11500 Moderate none 1936-03-18 12.12 15700 Major none 1937-11-13 9.16 7140 Minor none 1940-03-31 11.61 13600 Moderate none 1942-05-23 10.14 8710 Moderate none 1942-12-30 9.26 7310 Minor none 1945-11-29 8.68 6340 Minor none 1946-05-27 9.79 8170 Minor none 1950-03-29 8.53 6340 Minor none 1950-11-25 11.62 13700 Moderate none 1950-12-04 8 5640 Minor none 1950-12-08 8.17 5920 Minor none 1951-03-31 8.92 6930 Minor none 1952-03-11 9.29 7540 Minor none 1953-05-26 8.36 6200 Minor none 1954-03-02 9.02 7080 Minor none 1955-10-15 9.3 7540 Minor none 1956-11-02 9.88 8510 Minor none 1959-01-22 8.9 6480 Minor (1) 1961-02-26 8.12 5780 Minor none 1962-02-28 8.4 -9999 Minor (1) 1964-03-11 9.07 7180 Minor none 1966-02-14 8.56 4100 Minor (1) 1970-04-03 8.3 6060 Minor none 1972-03-03 10.15 9480 Moderate none 1972-06-23 14.85 34600 Major none 1973-02-02 8.02 6260 Minor none 1975-02-25 8.6 7190 Minor none 1975-09-26 9.11 8060 Minor none 1976-10-09 9.1 8040 Minor none 1977-11-08 8.81 7550 Minor none 1978-01-09 8.22 6520 Minor none 1979-01-25 9.76 8610 Minor none 1979-02-26 13 -9999 Major (1) 1979-03-06 8.95 7210 Minor none 1979-09-03 9.25 7710 Minor none 1979-09-06 9.04 7360 Minor none 1981-02-11 9.61 -9999 Minor (1) 1981-02-24 9.18 7590 Minor none 1983-12-13 8.08 5830 Minor none 1984-02-15 11.73 13300 Moderate none 1984-06-18 8.83 7010 Minor none 1986-03-15 8.89 7110 Minor none 1988-05-19 8.61 6540 Minor none 1989-07-20 8.47 6320 Minor none 1993-03-31 9.01 7200 Minor none 1993-04-01 9.37 7820 Minor none 1993-04-17 8.06 5680 Minor none 1993-11-28 9.47 7980 Minor none 1995-01-20 8.26 5990 Minor none 1996-01-19 13.74 25300 Major none 1996-01-27 8.24 5960 Minor none 1996-10-20 8.05 5720 Minor none 1996-12-02 8.41 6220 Minor none 1998-01-08 8.75 6770 Minor none 1999-01-24 9.18 7490 Minor none 2003-09-23 8.44 6270 Minor none 2003-12-11 8.23 6000 Minor none 2004-09-18 12.27 16000 Major none 2005-11-30 8.24 5970 Minor none 2006-09-02 8.31 6070 Minor none 2007-03-03 8.99 7170 Minor none 2008-03-05 10.32 9590 Moderate none 2010-01-25 8.43 6250 Minor none 2010-03-14 8.92 7050 Minor none 2010-12-01 9.73 8470 Minor none 2011-03-11 10.06 9090 Moderate none 2011-04-16 8.06 5720 Minor none 2011-09-08 8.88 7000 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