West Branch Susquehanna River at Lock Haven, Clinton County PA (LHVP1)
Gage Location: Clinton County, Pennsylvania	Site Location: Clinton County, Pennsylvania
Latitude: 41.138	Longitude: -77.442	Elevation: 534.519 ft. MSL	Drainage Area: 3345 Sq. Mi.
Minor Stage: 21 ft.	Moderate Stage: 23 ft.	Major Stage: 25 ft.
First Flood: 1889-06-01	Last Flood: 2010-12-01 Crest: 24.1 ft.	Datum change: 1974-10-01	Number of Floods: 20

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1889-06-01 29.8 -9999 Major C1 1898-03-24 26.4 -9999 Major C1 1902-03-01 23.7 -9999 Moderate C1 1904-03-04 24.2 -9999 Moderate C1 1904-11-04 24.2 -9999 Moderate C1 1918-02-21 26.8 -9999 Major C1 1923-03-04 25.1 -9999 Major C1 1926-02-26 22.8 -9999 Minor C1 1936-03-18 32.3 -9999 Major C1 1940-04-01 21.7 -9999 Minor C1 1942-12-31 23.1 -9999 Moderate C1 1946-05-28 26.85 -9999 Major C1 1950-11-26 27.61 -9999 Major C1 1964-03-10 26.1 -9999 Major C1 1972-06-23 31.1 -9999 Major C1 1975-09-26 22.92 91500 Minor F2 1984-02-15 22.38 79000 Minor F2 1996-01-20 25.76 93900 Major F2 2004-09-18 28.13 111000 Major F2 2010-12-01 24.1 83400 Moderate F2

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: 12:55 PM May 15, 2013