Lackawanna River at Old Forge, Lackawanna County PA (OFRP1)
Gage Location: Lackawanna County, PennsylvaniaSite Location: Lackawanna County, Pennsylvania
Latitude: 41.359Longitude: -75.745Elevation: 595.26 ft. MSLDrainage Area: 332 Sq. Mi.
Minor Stage: 11 ft. Moderate Stage: 13 ft.Major Stage: 16 ft.
First Flood: 1934-07-28Last Flood: 2006-06-27 Crest: 13.39 ft.Datum change: 1959-10-01Number of Floods: 10

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1934-07-281725000MajorC1
1940-03-3111.8614300MinorC1
1942-05-2315.320900ModerateC1
1955-08-1920.0531000MajorC1
1985-09-2716.4924000MajorF2
1986-03-1511.812800MinorF2
1996-01-1915.5822300ModerateF2
2004-09-1816.723800MajorF2
2005-04-0311.7614000MinorF2
2006-06-2713.3917100ModerateF2



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