USGS Water-Year Summary 2022
01658000 MATTAWOMAN CREEK NEAR POMONKEY, MD
LOCATION - Lat 38°35'46.1", long 77°03'21.7" referenced to North American Datum of 1983, Charles County, MD, Hydrologic Unit 02070011, on bank at left downstream side of bridge on State Highway 227, 30 ft downstream from Old Womans Run, 1.2 mi southeast of Pomonkey, and 12.6 mi upstream from mouth.
DRAINAGE AREA - 54.8 mi².
- WDR MD-DE-DC-02-1. https://waterdata.usgs.gov/nwis/dv/?site_no=01658000: 2018-2019
. https://nwis.waterdata.usgs.gov/md/nwis/peak?site_no=01658000: 2018-2019
PERIOD OF RECORD - November 1949 to September 1972. Annual maximums, water years 1973-86. January 2001 to current year.
GAGE - Water-stage recorder, crest-stage gage and concrete control. Datum of gage is 39.76 ft above North American Vertical Datum of 1988.