Ramapo River at Pompton Lakes, Passaic County NJ (PPTN4)
Gage Location: Passaic County, New Jersey	Site Location: Passaic County, New Jersey
Latitude: 40.993	Longitude: -74.279	Elevation: 171.35 ft. MSL	Drainage Area: 160 Sq. Mi.
Minor Stage: 11.5 ft.	Moderate Stage: 13.5 ft.	Major Stage: 14.5 ft.
First Flood: 1882-09-23	Last Flood: 2011-09-08 Crest: 14.33 ft.	Datum change: 2008-05-01	Number of Floods: 99

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Year Before Datum Change Number of Floods 1882 1 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 1 1897 0 1898 0 1899 0 1900 0 1901 0 1902 1 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 1 1923 0 1924 1 1925 0 1926 0 1927 1 1928 0 1929 0 1930 0 1931 0 1932 0 1933 1 1934 0 1935 0 1936 1 1937 0 1938 1 1939 0 1940 0 1941 0 1942 0 1943 0 1944 0 1945 2 1946 0 1947 0 1948 1 1949 0 1950 0 1951 1 1952 3 1953 1 1954 0 1955 3 1956 0 1957 1 1958 1 1959 0 1960 1 1961 1 1962 0 1963 0 1964 0 1965 0 1966 0 1967 0 1968 1 1969 0 1970 2 1971 2 1972 0 1973 2 1974 0 1975 1 1976 0 1977 2 1978 2 1979 3 1980 2 1981 1 1982 1 1983 4 1984 3 1985 0 1986 1 1987 2 1988 0 1989 3 1990 1 1991 0 1992 0 1993 2 1994 0 1995 1 1996 4 1997 0 1998 1 1999 2 2000 0 2001 1 2002 0 2003 4 2004 5 2005 7 2006 7 2007 2

Year After Datum Change Number of Floods 2008 0 2009 0 2010 1 2011 5 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