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USGS Water-Year Summary 2024
01674500 MATTAPONI RIVER NEAR BEULAHVILLE, VA
LOCATION - Lat 37°53'02", long 77°09'55" referenced to North American Datum of 1983, King William County, VA, Hydrologic Unit 02080105, near right upstream corner of bridge on State Highway 628, 2.5 mi northeast of Beulahville, at King William County and King and Queen County line, 3.3 mi downstream from Maracossic Creek, and 54 mi upstream from mouth.
DRAINAGE AREA - 603 mi².
REVISIONS HISTORY - OFR 2006-1308: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1941 to September 1987, October 1987 to September 1989 estimated daily discharges only, October 1989 to current year.
GAGE - Water-stage recorder. Datum of gage is 11.47 ft NAVD of 1988. Prior to Oct. 14, 1942, nonrecording gage. Oct. 14, 1942, to Aug. 8, 1974, water-stage recorder on right bank at site 0.6 mi upstream at present datum. Aug. 8, 1974 to Sept. 8, 1987, water-stage recorder on left bank 80 ft downstream from previous site, at present datum. Sept. 8, 1987, to Aug. 31, 1989, nonrecording gage on downstream side of bridge, at present datum. Aug. 31, 1989, to Mar. 31, 1994, water-stage recorder on upstream side of bridge, at present datum. Mar. 31, 1994, to Sept. 28, 1995, nonrecording gage on downstream side of bridge, at present datum. Sept. 28, 1995 to current year, water-stage recorder, at present site and datum.
REMARKS - Diurnal fluctuation at times during low flow caused by gristmill on Po River. Maximum discharge, 16,900 ft³/s, from rating curve extended above 11,760 ft³/s.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1968, 1969, 1979 to current year.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: October 1991 to September 1994.
WATER TEMPERATURE: October 1991 to September 1994, January 2006 to October 2009.
SPECIFIC CONDUCTANCE: October 1991 to September 1994.
WATER TEMPERATURE: October 1991 to September 1994, January 2006 to October 2009.
INSTRUMENTATION - Specific conductance and water temperature monitor October 1991 to September 1994. Water temperature monitor January 2006 to October 2009.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 80 microseimens/cm, Dec. 19, 20, 1989, but may have been higher during periods of missing record; minimum recorded, 28 microseimens/cm, June 2, 1990, but may have been lower during periods of missing record.
WATER TEMPERATURE: Maximum recorded, 30.0°C, July 1, 1991, July 10, 1993, and Aug. 3, 2006, but may have been higher during periods of missing record; minimum recorded, 0.0°C, Jan. 17, 21, 22, 23, 2009, but may have been lower during periods of missing record.
SPECIFIC CONDUCTANCE: Maximum recorded, 80 microseimens/cm, Dec. 19, 20, 1989, but may have been higher during periods of missing record; minimum recorded, 28 microseimens/cm, June 2, 1990, but may have been lower during periods of missing record.
WATER TEMPERATURE: Maximum recorded, 30.0°C, July 1, 1991, July 10, 1993, and Aug. 3, 2006, but may have been higher during periods of missing record; minimum recorded, 0.0°C, Jan. 17, 21, 22, 23, 2009, but may have been lower during periods of missing record.
