Frankstown Branch Juniata River at Williamsburg, Blair County PA (WIBP1)
Gage Location: Blair County, PennsylvaniaSite Location: Blair County, Pennsylvania
Latitude: 40.463Longitude: -78.2Elevation: 831.78 ft. MSLDrainage Area: 291 Sq. Mi.
Minor Stage: 12 ft. Moderate Stage: 13 ft.Major Stage: 15 ft.
First Flood: 1889-06-01Last Flood: 2011-09-10 Crest: 12.16 ft.Datum change: 1928-08-14Number of Floods: 44

Click on table headers to sort
Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1889-06-0119.135500MajorC1
1924-05-1212.811000MinorC1
1925-02-1212.410200MinorC1
1929-10-2313.913000Moderatenone
1936-03-1818.5830000Majornone
1937-04-2613.913400Moderatenone
1937-04-2812.4311400Minornone
1940-03-3112.9412900Minornone
1952-03-1112.829250Minornone
1954-03-0113.9811200Moderatenone
1954-10-1612.278000Minornone
1956-08-0813.2310500Moderatenone
1960-05-0913.369920Moderatenone
1961-02-2614.1211400Moderatenone
1963-03-0512.255130MinorC5 C7
1964-03-1012.047540Minornone
1966-02-1413.39800Moderatenone
1967-03-0612.929050Minornone
1970-04-0213.548550Moderatenone
1970-11-1314.510000Moderatenone
1972-06-2318.3916400Majornone
1977-04-0312.116770Minornone
1979-03-0513.057900Moderatenone
1984-02-1515.3811300Majornone
1986-03-1512.096960Minornone
1987-04-0513.769040Moderatenone
1993-04-1614.089470Moderatenone
1993-11-2816.0312300Majornone
1994-03-2513.598820Moderatenone
1996-01-1919.3517800Majornone
1996-03-2012.056920Minornone
1996-07-2013.288420Moderatenone
1996-09-0712.827840Minornone
1997-11-0817.915200Majornone
2003-01-0213.498690Moderatenone
2003-11-2012.857900Minornone
2004-09-0916.9113600Majornone
2004-09-1819.4618000Majornone
2010-01-2512.257160Minornone
2010-03-1413.568780Moderatenone
2010-12-0115.2711600Majornone
2011-03-1113.779470Moderatenone
2011-09-0714.039810Moderatenone
2011-09-1012.167360Minornone



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: 07:20 AM Nov 12, 2013