USGS Water-Year Summary for Site 02037500

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	00060 Discharge(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

02037500 JAMES RIVER NEAR RICHMOND, VA

LOCATION - Lat 37°33'47", long 77°32'50" referenced to North American Datum of 1927, Henrico County, VA, Hydrologic Unit 02080205, on left bank 0.2 mi upstream from Huguenot Memorial Bridge, 0.5 mi southwest of Richmond city limits, 1.7 mi downstream from Bosher Dam, 3.3 mi upstream from Powhite Creek, and at mile 116.6.

DRAINAGE AREA - 6,753 mi².

REVISIONS HISTORY - WSP 972: 1936(M). WSP 1433: 1951(M). OFR 2006-1308: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1934 to current year. Gage-height records collected in vicinity of Mayo's Bridge, at mile 109.5, 1876-1956, and at mile 108.7 since 1957, are contained in reports of the National Weather Service.

GAGE - Water-stage recorder. Datum of gage is 98.04 ± 0.1 ft above NAVD 88.

COOPERATION - Records were provided by the Virginia Department of Environmental Quality - Water Division.

REMARKS - Diversion from 40 ft³/s to 90 ft³/s from river downstream from gage except during periods of low flow. Flow regulated by powerplants upstream from station. Above 18.2 ft stage, there is interchange of flow with James River and Kanawha Canal. Records of daily discharge include diversion by city of Richmond but do not include flow in James River and Kanawha Canal (station 02037000) which diverts around station. National Weather Service gage-height telemeter at station. Maximum discharge, 313,000 ft³/s, includes canal flow. Minimum daily discharge of James River and James River and Kanawha Canal combined, 214 ft³/s, Oct. 5, 1941, caused by recharging of the pool above Bosher Dam after the canal gates were closed. Since 1982, low flows during summer months are augmented by releases from Lake Moomaw, station 02011795.

EXTREMES FOR PERIOD OF RECORD - Instantaneous low flow, not determined. Lowest daily mean, 10 ft³/s, on many days in 1966, 1968, and 1970, result of diversion.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1947 to 1956, 1967 to 1969, and 2004 to current year.

PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: October 1948 to September 1951, October 1952 September 1956, and April 1968 to September 1969.
WATER TEMPERATURE: October 1947 to September 1951, October 1952 September 1956, and April 1968 to September 1969.

EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 470 microseimens/cm, Oct. 22, 1968, but may have been higher during periods of missing record; minimum recorded, 47 microseimens/cm, Aug. 17, 1949, but may have been lower during periods of missing record.
WATER TEMPERATURE: Maximum recorded, 35.0°C, Aug. 23 to 25, 1968, but may have been higher during periods of missing record; minimum recorded, 0.0°C, several days in Jan. and Feb. 1951, 1954, 1956, and 1969, but may have been lower during periods of missing record.