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

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1865-03-1828-9999ModerateC1
1901-12-1622.8188000MinorC1
1902-03-0326.9243000ModerateC1
1904-01-2526.2-9999ModerateC1
1904-02-1024.6-9999ModerateC1
1904-03-0930.71-9999MajorC1 C4
1910-03-0321165000MinorC1
1913-03-2823.11192000ModerateC1
1914-03-2922.6186000MinorC1
1916-04-0221.8175000MinorC1
1920-03-1420.9170000MinorC1
1925-02-1320.3162000MinorC1
1929-04-2320.35163000MinorC1
1935-07-1120153000MinorC1
1936-03-2027.42250000ModerateC1
1940-04-0225.25222000Moderatenone
1943-01-0124204000Moderatenone
1946-05-2925.98234000Moderatenone
1948-03-2422.63184000Minornone
1950-03-3021.81168000Minornone
1956-03-0922.47175000Minornone
1958-04-0821.87169000Minornone
1960-04-0223.92198000Moderatenone
1961-02-2821.72167000Minornone
1964-03-1125.13261000Moderatenone
1972-06-2532.16363000Majornone
1975-09-2827.52257000Moderatenone
1979-03-0723.93188000ModerateC5
1983-04-1720.53149000MinorC5
1984-04-0724.14194000ModerateC5
1986-03-1622.68173000MinorC5
1993-04-0323.97187000Moderatenone
1994-03-2620.15139000Minornone
1996-01-2125.96209000Moderatenone
1998-01-1020.43143000Minornone
2004-09-1926.22220000ModerateC5
2005-01-1520.56149000Minornone
2005-03-3020.86154000Minornone
2005-04-0424.28202000ModerateC5
2006-06-2828.19260000ModerateC5
2011-03-1222.57170000Minornone
2011-04-2922.41169000Minornone
2011-09-0931.55311000Majornone



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