Aughwick Creek near Shirleysburg, Huntingdon County PA (SLYP1)
Gage Location: Huntingdon County, Pennsylvania	Site Location: Huntingdon County, Pennsylvania
Latitude: 40.282	Longitude: -77.891	Elevation: 565 ft. MSL	Drainage Area: 301 Sq. Mi.
Minor Stage: 10 ft.	Moderate Stage: 12 ft.	Major Stage: 20 ft.
First Flood: 1990-10-24	Last Flood: 2012-10-30 Crest: 11.81 ft.	Datum change: 1990-01-30	Number of Floods: 31

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1990-10-24 10.65 7150 Minor none 1993-03-29 11.83 8210 Minor none 1993-11-28 15.19 11500 Moderate none 1995-06-27 10.42 5960 Minor none 1996-01-19 19.46 44400 Moderate (1) 1996-12-02 12.41 9900 Moderate none 1997-11-08 15.29 17000 Moderate none 1999-01-24 11.5 7780 Minor none 2003-01-02 10.9 6800 Minor none 2003-06-04 12.6 9980 Moderate none 2003-11-20 10.68 6500 Minor none 2003-12-11 13.52 11900 Moderate none 2004-09-09 10.79 6650 Minor none 2004-09-18 18.5 34200 Moderate none 2005-03-29 12.52 9720 Moderate none 2005-11-30 12.15 8980 Moderate none 2008-03-05 14.04 13300 Moderate none 2008-04-27 11.15 7200 Minor none 2008-05-12 10.35 6020 Minor none 2009-05-05 10.36 6030 Minor none 2010-01-26 12.18 9040 Moderate none 2010-03-14 12.78 10300 Moderate none 2010-12-02 12.17 9020 Moderate none 2011-03-11 13.43 11700 Moderate none 2011-04-17 12.45 9580 Minor none 2011-04-28 10.16 5760 Minor none 2011-09-07 14.8 15800 Moderate none 2011-09-27 10.05 5610 Minor none 2011-11-23 12.63 9950 Moderate none 2011-12-08 10.4 5720 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