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Peak Streamflow for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


USGS 01576500 Conestoga River at Lancaster, PA

Lancaster County, Pennsylvania
Hydrologic Unit Code 02050306
Latitude  40°03'00", Longitude  76°16'39" NAD27
Drainage area 324  square miles
Gage datum 245.63 feet above NGVD29
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
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Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1929 1929-02-27 6.573 9,400
1930 1929-10-02 3.003 2,680
1931 1931-07-11 5.203 4,220
1932 1932-03-28   5,4802
1933 1933-08-24 17.52 22,800
1934 1934-09-30 14.04 15,000
1935 1934-12-01 6.41 2,900
1936 1936-03-12 9.58 6,890
1937 1937-06-19 6.95 3,240
1938 1937-10-23 9.00 6,280
1939 1939-02-04 9.16 6,620
1940 1940-04-09 9.35 6,960
1941 1940-12-17 6.96 3,200
1942 1942-05-23 15.12 17,300
1943 1942-12-30 8.85 5,700
1944 1943-11-09 9.57 6,900
1945 1945-09-11 9.86 7,370
1946 1946-06-02 12.69 12,400
1947 1947-07-18 6.00 2,130
1948 1947-11-04 7.03 3,260
1949 1949-01-06 10.95 9,200
1950 1950-03-23 8.95 6,000
1951 1950-11-26 10.42 8,180
1952 1952-04-29 9.04 6,000
1953 1952-11-22 10.04 7,530
1954 1953-12-07 9.45 6,600
1955 1955-08-19 12.11 11,200
1956 1956-07-03 8.03 4,580
1957 1957-04-05 7.59 4,040
1958 1958-02-28 9.36 6,600
1959 1959-09-03 8.97 6,000
1960 1960-09-13 11.77 10,600
1961 1961-02-26 9.18 6,300
1962 1962-02-27 9.52 6,750
1963 1963-03-06 9.83 7,210
1964 1964-04-30 8.21 4,870
1965 1965-02-08 9.36 6,540
1966 1966-02-14 9.63 6,940
1967 1967-03-07 10.40 8,180
1968 1968-09-11 7.46 3,860
1969 1969-07-24 9.84 7,270
1970 1970-07-10 9.78 7,180
1971 1971-02-14 12.08 11,200
1972 1972-06-23 27.90 50,300
1973 1973-06-29 11.38 8,830
1974 1973-12-21 9.12 5,360
1975 1975-07-21 10.19 6,750
1976 1976-01-27 12.84 12,600
1977 1977-03-23 10.01 6,610
1978 1978-01-25 18.14 25,300
1979 1979-01-25 13.91 13,000
1980 1979-10-01 10.00 6,560
1981 1981-05-16 5.75 1,790
1982 1982-06-17 14.20 13,600
1983 1983-04-16 12.48 10,200
1984 1984-07-07 12.85 10,800
1985 1985-02-12 12.705 10,6002
1986 1986-07-27 13.005 11,0002
1987 1987-09-09 16.70 20,500
1988 1988-05-19 12.105 9,6002
1989 1989-05-06 15.30 16,300
1990 1990-01-30 10.105 6,7002
1991 1990-11-11 7.60 3,530
1992 1992-03-27 8.69 4,810
1993 1993-03-05 9.60 5,950
1994 1993-12-05 13.95 12,600
1995 1995-03-09 9.32 5,650
1996 1996-01-20 12.26 9,560
1997 1996-10-20 13.22 11,200
1998 1998-06-13 9.805 6,2002
1999 1999-09-17 16.39 17,600
2000 2000-03-22 14.14 12,900
2001 2000-12-17 10.805 7,4002
2002 2002-05-14 9.07 5,390
2003 2003-09-23 12.74 10,400
2004 2004-07-28 14.43 13,500
2005 2005-03-29 10.28 6,740
2006 2005-10-09 17.80 20,800
2007 2007-03-02 12.95 10,700
2008 2008-02-14 10.49 7,010
2009 2008-12-12 9.64 5,950
2010 2009-12-09 8.47 4,570
2011 2011-09-08 21.30 30,200
2012 2011-11-23 10.03 6,640
2013 2012-10-30 14.24 13,700
2014 2014-05-01 11.86 9,410
2015 2015-03-11 9.61 6,070
2016 2016-02-25 10.97 8,000
2017 2017-04-07 7.67 3,730
2018 2018-08-04 14.28 13,800
2019 2018-11-25 10.80 7,750
2020 2020-08-05 9.57 6,010
2021 2021-09-02 18.50 23,000
2022 2022-04-08 8.21 4,350
2023 2023-05-01 7.62 3,680
2024 2023-12-18 13.31 11,900
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.