USGS Water-Year Summary 2019
01670400 NORTH ANNA RIVER NEAR PARTLOW, VA
LOCATION - Lat 38°00'46", long 77°42'05" referenced to North American Datum of 1927, Louisa County, VA, Hydrologic Unit 02080106, on left downstream side of bridge on State Highway 601, 3.8 mi southwest of Partlow, 1.1 mi upstream from Northeast Creek, and 0.5 mi downstream from Lake Anna dam.
DRAINAGE AREA - 342 mi².
- OFR 2006-1308: Drainage area.
PERIOD OF RECORD - October 1978 to September 1995. March 2007 to current year.
GAGE - Water-stage recorder. Datum of gage is 167.45 ft NAVD of 1988.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 22, 1972 reached a stage of 36.32 ft, from floodmark.