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

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Year Before Datum Change Number of Floods 1889 1 1890 0 1891 0 1892 0 1893 0 1894 0 1895 0 1896 0 1897 0 1898 0 1899 0 1900 0 1901 0 1902 0 1903 0 1904 0 1905 0 1906 0 1907 0 1908 0 1909 0 1910 0 1911 0 1912 0 1913 0 1914 0 1915 0 1916 0 1917 0 1918 0 1919 0 1920 0 1921 0 1922 0 1923 0 1924 1 1925 1 1926 0 1927 0

Year After Datum Change Number of Floods 1928 0 1929 1 1930 0 1931 0 1932 0 1933 0 1934 0 1935 0 1936 1 1937 2 1938 0 1939 0 1940 1 1941 0 1942 0 1943 0 1944 0 1945 0 1946 0 1947 0 1948 0 1949 0 1950 0 1951 0 1952 1 1953 0 1954 2 1955 0 1956 1 1957 0 1958 0 1959 0 1960 1 1961 1 1962 0 1963 1 1964 1 1965 0 1966 1 1967 1 1968 0 1969 0 1970 2 1971 0 1972 1 1973 0 1974 0 1975 0 1976 0 1977 1 1978 0 1979 1 1980 0 1981 0 1982 0 1983 0 1984 1 1985 0 1986 1 1987 1 1988 0 1989 0 1990 0 1991 0 1992 0 1993 2 1994 1 1995 0 1996 4 1997 1 1998 0 1999 0 2000 0 2001 0 2002 0 2003 2 2004 2 2005 0 2006 0 2007 0 2008 0 2009 0 2010 3 2011 3 2012 0 2013 0

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: 08:09 AM Feb 08, 2013