USGS Water-Year Summary 2021
01603000 NORTH BRANCH POTOMAC RIVER NEAR CUMBERLAND, MD
LOCATION - Lat 39°37'18.5", long 78°46'24.3" referenced to North American Datum of 1983, Allegany County, MD, Hydrologic Unit 02070002, on left bank at downstream side of Wiley Ford Bridge, 2.0 mi south of Cumberland, 2.1 mi downstream from Wills Creek, and at mile 19.6.
DRAINAGE AREA - 877 mi².
- WSP 726: Drainage area. WSP 781: 1932(M). WDR WV-97-1: Drainage area.
PERIOD OF RECORD - May 1929 to current year. Gage-height records collected at various sites about 2.0 mi upstream from September 1901 to December 1932 and thereafter at present site, are contained in reports of the National Weather Service.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 584.57 ft above North American Vertical Datum of 1988. Prior to June 18, 1929, nonrecording gage at same site and gage datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known, 29.2 ft, June 1, 1889, discharge, about 89,000 ft³/s. Flood of Mar. 29, 1924, reached a stage of 28.4 ft, discharge, about 82,000 ft³/s.
PERIOD OF RECORD - October 2013 to current year.
INSTRUMENTATION - Unshielded, standard 8-in. diameter, tipping bucket precipitation gage with 0.01 in. tip increment.
EXTREMES FOR PERIOD OF RECORD - Maximum daily precipitation, 3.80 in., June 27, 2015.