Conestoga River at Lancaster, Lancaster County PA (LNCP1)
Gage Location: Lancaster County, PennsylvaniaSite Location: Lancaster County, Pennsylvania
Latitude: 40.05Longitude: -76.278Elevation: 245.63 ft. MSLDrainage Area: 324 Sq. Mi.
Minor Stage: 11 ft. Moderate Stage: 13 ft.Major Stage: 15 ft.
First Flood: 1933-08-24Last Flood: 2014-05-01 Crest: 11.63 ft.Datum change: 1933-05-01Number of Floods: 51

Click on table headers to sort
Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1933-08-2417.5222800Majornone
1934-07-0812.812600Minornone
1934-09-3014.0415000Moderatenone
1942-05-2315.1217300Majornone
1942-08-1811.610300Minornone
1946-06-0212.6912400Minornone
1955-08-1912.1111200Minornone
1960-09-1311.7710600Minornone
1971-02-1412.0811200Minornone
1972-06-2327.950300Majornone
1973-06-2911.388830Minornone
1976-01-2712.8412600Minornone
1978-01-2518.1425300Majornone
1978-03-2711.749060Minornone
1979-01-2112.259830Minornone
1979-01-2513.9113000Moderatenone
1979-02-2613.8712900Moderatenone
1982-06-1714.213600Moderatenone
1983-04-1612.4810200Minornone
1983-12-1311.929330Minornone
1984-07-0712.8510800Minornone
1985-02-1212.7110600MinorC3 F1
1986-07-271311000ModerateC3 F1
1987-09-0916.720500Majornone
1988-05-1912.119600MinorC3 F1
1988-07-22129500Minornone
1988-07-2411.89200Minornone
1989-05-0615.316300Majornone
1993-11-2811.959060Minornone
1993-12-0513.9512600Moderatenone
1996-01-2012.269560Minornone
1996-10-2013.2211200Moderatenone
1996-11-0911.78700Minornone
1996-12-1411.99000Minornone
1999-09-1716.3917600Majornone
2000-03-2214.1412900Moderatenone
2003-06-2111.668600Minornone
2003-09-2312.7410400Minornone
2004-02-0711.097815Minornone
2004-07-2814.4313500Moderatenone
2005-10-0917.820800Majornone
2006-06-2814.714000Moderatenone
2006-11-1711.057760Minornone
2007-03-0212.9510700Minornone
2010-10-0111.358180minorC7
2011-08-2812.159370Minornone
2011-09-0821.330200Majornone
2012-10-3114.2713800Moderatenone
2013-01-3112.7711000Minornone
2013-10-1111.28350Minornone
2014-05-0111.639030Minornone



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