Situational Awareness (Saturday, 2025-11-29)
According to information from the Middle Atlantic River Forecast Center, no appreciable precipitation fell in the Potomac watershed over the past 24 hours. An average accumulation of approximately 1/2 inch is expected in the watershed over the next 4 days.
Special Conditions
None
Daily flows:
Little Falls gage flow 2025-11-28: 1435 MGD (2220 cfs)
Little Falls gage flow 2025-11-29: 1428 MGD (est., based on recently available real-time data) (2210 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2025-11-28: 1487 MGD (2300 cfs)
Point of Rocks flow 2025-11-29: 1642 MGD (est., based on recently available real-time data) (2540 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2025-11-28: 1435 MGD (2220 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 (2025-11-28):
Fairfax Water Corbalis withdrawal - Potomac: 73 MGD
WSSC Water Potomac withdrawal: 146 MGD
Washington Aqueduct withdrawal - Great Falls: 103 MGD
Washington Aqueduct withdrawal - Little Falls: 0 MGD
Loudoun Water withdrawal: 10 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 332 MGD
Total net Potomac withdrawal: 324 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 2300 cfs
QPR, obs: 2300 cfs
QPR, WS: 0 cfs
Interstate Commission on the Potomac River Basin