Towanda Creek near Monroeton, Bradford County PA (MONP1)
Gage Location: Bradford County, Pennsylvania	Site Location: Bradford County, Pennsylvania
Latitude: 41.707	Longitude: -76.485	Elevation: 765.53 ft. MSL	Drainage Area: 215 Sq. Mi.
Minor Stage: 15.5 ft.	Moderate Stage: 17 ft.	Major Stage: 18.5 ft.
First Flood: 1915-07-08	Last Flood: 2011-09-08 Crest: 20.97 ft.	Datum change: 1976-08-26	Number of Floods: 37

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1915-07-08 18.3 19900 Major *** (5) 1917-08-09 17.3 15700 Moderate *** (5) 1918-03-14 15 10000 Minor *** (5) 1919-07-22 16.3 12900 Moderate *** (5) 1920-03-12 14.6 9400 Minor *** (5) 1924-04-06 16 12200 Moderate *** (5) 1925-02-11 15.6 7650 Minor *** (5) 1926-11-16 18.7 22000 Major *** (5) 1929-05-02 14.3 8800 Minor *** (5) 1933-08-24 18 18500 Major *** (5) 1934-12-01 14.1 8500 Minor *** (5) 1936-03-18 18.6 21200 Major *** (5) 1940-03-30 17.8 17700 Moderate *** (5) 1941-04-05 14.2 8640 Minor *** (5) 1942-05-23 14.1 8860 Minor *** (5) 1972-06-22 16.9 32700 Minor *** (5) 1975-09-26 15.7 24900 Minor *** (5) 1978-01-09 14.56 18400 Minor (O) 1979-03-06 14.54 18400 Minor (O) 1983-12-13 15.72 25000 Minor none 1984-02-14 15.22 22100 Minor (O) 1986-03-15 14.79 19700 Minor (O) 1990-10-23 15.33 23900 Minor (O) 1994-08-18 15.71 25000 Minor none 1996-01-19 20.86 67900 Major none 2002-03-27 14.06 16100 Minor (O) 2003-06-01 14.48 18200 Minor (O) 2004-09-18 18.99 23900 Major none 2005-04-03 15.81 11800 Minor none 2006-11-16 14.43 9080 Minor (O) 2008-03-05 14.19 8660 Minor (O) 2010-01-25 17.15 15100 Moderate none 2010-12-01 15.92 12000 Minor none 2011-03-11 15.9 12000 Minor none 2011-04-28 16.25 12800 Minor none 2011-09-08 20.97 64200 Major 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