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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
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.
REVISIONS HISTORY - WSP 726: Drainage area. WSP 781: 1932(M). WDR WV-97-1: Drainage area.
SURFACE-WATER RECORDS
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.
REMARKS - Water Years 2021-2023: Records good, except those for estimated discharges, which are poor.
Water Year 2020: Records good. No estimated discharges.
Water Years 2017-2019: Records good, except those for estimated discharges, which are poor.
Water Years 2014-2016: Records good, except those above 13,000 ft³/s, which are fair, and those for estimated daily discharges, which are poor.
Water Year 2013 and prior years' accuracy statements can be found in Annual Water Data Reports.
Prior to July 1981, some regulation at low flow by Stony River Reservoir, 79 mi upstream from station. Low-flow regulation since December 1950 by Savage River Reservoir, 39 mi upstream from station (see station 01597500). Flow regulated since July 1981 by Jennings Randolph Lake, 43 mi upstream from station (see station 01595790). Prior to July 1957, small amount of inflow from industrial wastes and sewage from city of Cumberland from water diverted from Evitts Creek, mouth of which is downstream from station. Diversion to Chesapeake and Ohio Canal prior to 1935. National Weather Service gage height telemeter at station. U.S. Army Corps of Engineers satellite data-collection platform at station.
Prior to July 1981, some regulation at low flow by Stony River Reservoir, 79 mi upstream from station. Low-flow regulation since December 1950 by Savage River Reservoir, 39 mi upstream from station (see station 01597500). Flow regulated since July 1981 by Jennings Randolph Lake, 43 mi upstream from station (see station 01595790). Prior to July 1957, small amount of inflow from industrial wastes and sewage from city of Cumberland from water diverted from Evitts Creek, mouth of which is downstream from station. Diversion to Chesapeake and Ohio Canal prior to 1935. National Weather Service gage height telemeter at station. U.S. Army Corps of Engineers satellite data-collection platform at station.
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.
CLIMATOLOGICAL RECORDS
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, 4.47 in., September 1, 2021.
REMARKS - Gaps in record indicate missing or erroneous data. Records estimated as zero are based on confirmation with nearby U.S. Geological Survey and National Weather Service sites that zero precipitation occurred on those days. U.S. Army Corps of Engineers satellite data-collection platform at station.
