According to MARFC, no precipitation fell in the basin over the last 24 hours. A trace amount, up to 0.1 inches, is expected over the next three days.
Note a correction to Washington Aqueduct's reported 7/31 withdrawal. The reported number was 121 MGD while the correct number was 132 MGD.
Daily flows:
Little Falls gage flow 2021-08-02: 1590 MGD (2460 cfs)
Little Falls gage flow 2021-08-03: 1584 MGD (est., based on recently available real time data) (2450 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2021-08-02: 1170 MGD (1810 cfs)
Point of Rocks flow 2021-08-03: 1099 MGD (est., based on recently available real time data) (1700 cfs)
Yesterday's Washington metropolitan area Potomac River withdrawals and discharges (2021-08-02):
Fairfax Water Corbalis withdrawal (Potomac): 90 MGD
WSSC Water Potomac withdrawal: 127 MGD
Washington Aqueduct withdrawal: 138 MGD
Loudoun Water withdrawal: 11 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 366 MGD
Total net Potomac withdrawal: 359 MGD
Loudoun Water drought operations protocol river flow values based on yesterday's flows:
QPR: 1810 cfs
QPR, obs:1810 cfs
QPR, WS: 0 cfs
Note to Loudoun Water: See NWS ensemble flow forecasts (HEFS, GEFS, NAEFS) for Point of Rocks flow for the next 7 days – see https://www.weather.gov/erh/mmefs_marfc?id=PORM2&model=NAEFS.