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STATION.--01651000 NORTHWEST BRANCH ANACOSTIA RIVER NEAR HYATTSVILLE, MD.
LOCATION.--Lat 38°57'08.4", long 76°57'57.8", Prince Georges County, Hydrologic Unit 02070010,
on right bank at downstream side of bridge on Queens Chapel Road (State Highway 500), 0.8 mi downstream
from Sligo Branch, 1.0 mi west of Hyattsville, and 1.6 mi upstream from confluence with Northeast Branch.
DRAINAGE AREA.--49.4 mi2.
PERIOD OF RECORD.--July 1938 to current year.
GAGE.--Water-stage recorder and concrete control. Datum of gage is 17.10 ft above National Geodetic
Vertical Datum of 1929 (Washington Suburban Sanitary Commission bench mark).
REMARKS.--Prior to June 1961, low flow regulated by storage at Burnt Mills Dam, 7.0 mi upstream from
station. Inflow pumped from Patuxent River to augment water supply for Washington Suburban Sanitary
District, August 1939 to August 1960. Small diversion since 1962 for irrigation of golf courses upstream
from station. U.S. Geological Survey satellite collection platform at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,000 ft3/s, June 22, 1972,
gage height, 15.89 ft; minimum discharge, 0.0 ft3/s, no flow Aug. 29-31, Sept. 1-12, 1966,
July 18, 19, 24-31, Aug. 1-14, 18-20, 1999, Aug. 20-24, 2002.
COOPERATION.--Funding for the operation of this station is provided by Prince Georges County, Metropolitan
Washington Council of Governments, and the U.S. Geological Survey.
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