North Branch Potomac River at Luke, Mineral County MD (LUKM2)
Gage Location: Mineral County, West VirginiaSite Location: Allegany County, Maryland
Latitude: 39.479Longitude: -79.065Elevation: 944.22 ft. MSLDrainage Area: 406 Sq. Mi.
Minor Stage: 10.5 ft. Moderate Stage: 13 ft.Major Stage: 15 ft.
First Flood: 1902-02-28Last Flood: 1978-07-03 Crest: 14.87 ft.Datum change: 1978-10-01Number of Floods: 11

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1954-10-1517.1539400MajorC1 F2
1955-08-1715.5331000MajorC1 F2
1956-08-0611.4815800MinorC1 F2
1957-02-1010.5813200MinorC1 F2
1963-03-0511.8316800MinorC1 F2
1967-03-0711.1314500MinorC1 F2
1968-05-2410.8413600MinorC1 F2
1978-07-0314.8728200ModerateC1 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: 08:00 PM May 28, 2014