Daily Potomac flow and demand update (Tuesday, 2025-11-11)

Situational Awareness (Tuesday, 2025-11-11)
According to information from the Middle Atlantic River Forecast Center, no appreciable rainfall fell in the Potomac watershed yesterday and little is expected during the next ten days. 

Special Conditions
None

Daily flows:
Little Falls gage flow 2025-11-10: 1150 MGD (1780 cfs)
Little Falls gage flow 2025-11-11: 1118 MGD (est., based on recently available real-time data) (1730 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2025-11-10: 1163 MGD (1800 cfs)
Point of Rocks flow 2025-11-11: 1234 MGD (est., based on recently available real-time data) (1910 cfs)

Yesterday's estimated daily flows:
Great Falls estimated flow 2025-11-10: 1150 MGD (1779 cfs)
Note: Estimated flow below Great Falls intake is flow at Little Falls plus Little Falls water supply withdrawal.

Yesterday's Washington metropolitan area Potomac River withdrawals and discharges (2025-11-10):
Fairfax Water Corbalis withdrawal - Potomac: 79 MGD
WSSC Water Potomac withdrawal: 157 MGD
Washington Aqueduct withdrawal - Great Falls: 115 MGD
Washington Aqueduct withdrawal - Little Falls: 0 MGD
Loudoun Water withdrawal: 11 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 362 MGD
Total net Potomac withdrawal: 354 MGD

Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 1800 cfs
QPR, obs: 1800 cfs
QPR, WS: 0 cfs