Loyalsock Creek at Loyalsockville, Lycoming County PA (LOYP1)
Gage Location: Lycoming County, PennsylvaniaSite Location: Lycoming County, Pennsylvania
Latitude: 41.325Longitude: -76.913Elevation: 585.63 ft. MSLDrainage Area: 435 Sq. Mi.
Minor Stage: 12 ft. Moderate Stage: 13 ft.Major Stage: 14 ft.
First Flood: 1926-11-16Last Flood: 2011-09-07 Crest: 19.78 ft.Datum change: 1926-09-17Number of Floods: 15

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1926-11-1612.330500Minornone
1933-08-2412.229800Minornone
1946-05-2812.229800Minornone
1950-11-2612.3230500Minornone
1972-06-2314.7447900Majornone
1975-09-2614.546000Majornone
1982-02-0112.45-9999Minornone
1983-12-1412.1829700Minornone
1988-08-2912.4128600Minornone
1996-01-1917.9355800Majornone
1996-01-2712.1820000Minornone
2004-09-1815.2440400Majornone
2010-01-2514.234900Majornone
2011-03-1112.3425900Minornone
2011-09-0719.7869100Majornone



Codes and description

C1|Crest information during this period may be incomplete and therefore was not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information during this period 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: 07:31 AM Dec 19, 2014