No appreciable rain fell in the basin over the past 24 hours. A trace amount, up to 0.1 inches, is expected over the next three days.
Daily flows:
Little Falls gage flow 2021-08-03: 1286 MGD (2390 cfs)
Little Falls gage flow 2021-08-04: 1195 MGD (est., based on recently available real time data) (2220 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2021-08-03: 904 MGD (1680 cfs)
Point of Rocks flow 2021-08-04: 893 MGD (est., based on recently available real time data) (1660 cfs)
Yesterday's Washington metropolitan area Potomac River withdrawals and discharges (2021-08-03):
Fairfax Water Corbalis withdrawal (Potomac): 110 MGD
WSSC Water Potomac withdrawal: 126 MGD
Washington Aqueduct withdrawal: 138 MGD
Loudoun Water withdrawal: 11 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 385 MGD
Total net Potomac withdrawal: 377 MGD
Loudoun Water drought operations protocol river flow values (based on yesterday's flows):
QPR: 1680 cfs
QPR, obs: 1680 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.