Wills Creek near Cumberland, Allegany County MD (CWCM2)
Gage Location: Allegany County, Maryland	Site Location: Allegany County, Maryland
Latitude: 39.67	Longitude: -78.788	Elevation: 640.89 ft. MSL	Drainage Area: 247 Sq. Mi.
Minor Stage: 10 ft.	Moderate Stage: 12 ft.	Major Stage: 14 ft.
First Flood: 1924-03-29	Last Flood: 2012-10-31 Crest: 10.27 ft.	Datum change: 1929-10-18	Number of Floods: 17

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1924-03-29 13 -9999 Moderate *** (5) 1936-03-17 20.2 38100 Major (!!!) 1937-04-26 13.45 18600 Moderate none 1942-10-15 15.14 23300 Major none 1954-10-16 10.7 11900 Minor none 1960-05-08 10.29 11000 Minor none 1972-06-23 10.06 11300 Minor none 1984-02-14 10.8 13100 Minor none 1984-08-13 14.94 24000 Major none 1993-04-16 11.73 15400 Minor none 1993-11-28 10.26 11800 Minor none 1996-01-19 23.11 45900 Major none 1996-09-06 11.54 14900 Minor none 2005-03-29 11.41 14600 Minor none 2010-03-13 10.85 10600 Minor none 2011-03-11 10.96 10800 Minor none

MARFC Codes
Code Description
(!!!) Datum changed during this year.
(1) Backwater Effect.
(2) 15.77 ft also occurred on 11/25/1950 but only counted as one flood.
(3) Estimated from currrent USGS rating table.
(4) Estimated height from the USGS.
(5) Gage height at a different site and/or datum
(6) Discharge affected by Regulation or Diversion
(7) Due to changes, prior floods were based on present flood stage. Therefore, flood data could possibly be incomplete.
(8) Gage is a staff gage and not the offical USGS gage. Therefore, some floods may be missing from our study.
(9) Discharge effected by snow-melt, ice jam or debris jam break up
(A) Discharge affected to unknown degree by regulation or diversion.
(B) Month or day of occurrence is unknown or not exact.
(C) All or part of the record affected by urbanization, mining, agricultural changes, channelization, or other factors.
(D) Crest height adjusted to current datum.
(E) Estimated discharge.
(F) Only annual maximum peak available for this year.
(O) This flood occurred at a previous flood stage that is lower than the current flood stage. This is only a historical flood.
** Crest information looks reasonable despite potential problems. This data was used in our study.
*** Crest information looks unreliable and incomplete and was not used in our flood frequency study.
**** Gauge was discontinued in 2004. 2004 and later was not used in our study.
none No code

Updated: 08:58 AM Jun 28, 2012