Susquehanna River at Danville, Montour County PA (DANP1)
Gage Location: Montour County, Pennsylvania	Site Location: Montour County, Pennsylvania
Latitude: 40.958	Longitude: -76.619	Elevation: 431.29 ft. MSL	Drainage Area: 11220 Sq. Mi.
Minor Stage: 20 ft.	Moderate Stage: 23 ft.	Major Stage: 30 ft.
First Flood: 1865-03-18	Last Flood: 2011-09-09 Crest: 31.55 ft.	Datum change: 1939-06-29	Number of Floods: 43

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Year Before Datum Change	Number of Floods
1865	1
1866	0
1867	0
1868	0
1869	0
1870	0
1871	0
1872	0
1873	0
1874	0
1875	0
1876	0
1877	0
1878	0
1879	0
1880	0
1881	0
1882	0
1883	0
1884	0
1885	0
1886	0
1887	0
1888	0
1889	0
1890	0
1891	0
1892	0
1893	0
1894	0
1895	0
1896	0
1897	0
1898	0
1899	0
1900	0
1901	1
1902	1
1903	0
1904	3
1905	0
1906	0
1907	0
1908	0
1909	0
1910	1
1911	0
1912	0
1913	1
1914	1
1915	0
1916	1
1917	0
1918	0
1919	0
1920	1
1921	0
1922	0
1923	0
1924	0
1925	1
1926	0
1927	0
1928	0
1929	1
1930	0
1931	0
1932	0
1933	0
1934	0
1935	1
1936	1
1937	0
1938	0

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