Situational Awareness (Thursday, 2025-12-25)
According to information from the Middle Atlantic River Forecast Center, modest amounts of rain fell in the Potomac watershed during the past 24 hours - up to 0.25 inches. Over the next 3 days, the average accumulations of approximately 0.1 inches are expected.
Special Conditions
Happy holidays!
Daily flows:
Little Falls gage flow 2025-12-24: 1674 MGD (2590 cfs)
Little Falls gage flow 2025-12-25: 2017 MGD (est., based on recently available real-time data) (3120 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2025-12-24: 1887 MGD (2920 cfs)
Point of Rocks flow 2025-12-25: 1894 MGD (est., based on recently available real-time data) (2930 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2025-12-24: 1674 MGD (2590 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 (2025-12-24):
Fairfax Water Corbalis withdrawal - Potomac: 97 MGD
WSSC Water Potomac withdrawal: 155 MGD
Washington Aqueduct withdrawal - Great Falls: 110 MGD
Washington Aqueduct withdrawal - Little Falls: 0 MGD
Loudoun Water withdrawal: 9 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 371 MGD
Total net Potomac withdrawal: 363 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 2920 cfs
QPR, obs: 2920 cfs
QPR, WS: 0 cfs
Interstate Commission on the Potomac River Basin