Situational Awareness (Saturday, 2025-11-08)
According to information from the Middle Atlantic River Forecast Center, 1/10 to 1/4 of an inch of rain fell in most areas of the Potomac watershed over the past day. An average accumulation of approximately 1/4 inch is expected over the next 3 days.
Special Conditions
None
Daily flows:
Little Falls gage flow 2025-11-07: 1293 MGD (2000 cfs)
Little Falls gage flow 2025-11-08: 1312 MGD (est., based on recently available real-time data) (2030 cfs)
Note: Gage flow at Little Falls is measured after water supply withdrawals.
Point of Rocks flow 2025-11-07: 1293 MGD (2000 cfs)
Point of Rocks flow 2025-11-08: 1351 MGD (est., based on recently available real-time data) (2090 cfs)
Yesterday's estimated daily flows:
Great Falls estimated flow 2025-11-07: 1315 MGD (2034 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 (2025-11-07):
Fairfax Water Corbalis withdrawal - Potomac: 81 MGD
WSSC Water Potomac withdrawal: 135 MGD
Washington Aqueduct withdrawal - Great Falls: 99 MGD
Washington Aqueduct withdrawal - Little Falls: 22 MGD
Loudoun Water withdrawal: 11 MGD
Loudoun Water Broad Run discharge: 8 MGD
Total Potomac withdrawal: 348 MGD
Total net Potomac withdrawal: 340 MGD
Loudoun Water Potomac River (PR) flow values for drought operations protocol (based on yesterday's flows):
QPR: 2000 cfs
QPR, obs: 2000 cfs
QPR, WS: 0 cfs
Interstate Commission on the Potomac River Basin